Cooperative Fish and Wildlife Research Units Program: Oregon
Education, Research and Technical Assistance for Managing Our Natural Resources

Oregon Staff Member


Professor Daniel Dulany Roby

Education

  • Ph D University of Pennsylvania 1986
  • MS University of Alaska Fairbanks 1978
  • BA Antioch College 1974

Biography

Unit Leader-Wildlife Oregon Cooperative Fish and Wildlife Research Unit Professor of Wildlife Ecology Department of Fisheries and Wildlife Oregon State University

Teaching Interest

Wildlife Energetics and Nutrition Conservation Biology of Wildlife

Research Interest

Seabird/Fisheries Interactions Physiological Ecology of Birds, with emphasis on seabirds Conservation and Restoration of Colonial Waterbirds Climate Change and Seabird Ecology

Research Publications Publication Date
Wright, S. K., D. D. Roby, and R. G. Anthony. 2007. Responses of California Brown Pelicans to Disturbances at a Large Oregon Roost. Waterbirds 3);479-487. October 2007
Wright, S. D.D. Roby, and R.G. Anthony. 2012. Factors affecting the behavior of brown pelicans at a post-breeding roost. Western Birds 43:21-36. January 2012
Weitkamp, L.A., T.P. Good, D.E. Lyons, and D.D. Roby. The influence of environmental variation on the Columbia River estuarine fish community: Implications for predation on juvenile salmonids. Submitted to North Pacific Anadromous Fish Commission Bulletin. October 2016
Suzuki, Y., D.D. Roby, D.E. Lyons, K.N. Courtot, and K. Collis. 2015. Developing non-destructive techniques for managing conflicts between fisheries and double-crested cormorant colonies. Wildlife Society Bulletin 39:764-771. DOI: 10.1002/wsb.595 | Abstract July 2015
Suryan, R. M., D. P. Craig, D. D. Roby, N. D. Chelgren, K. Collis, W. D. Shufford, and D. E. Lyons. 2004. Redistribution and growth of the Caspian tern population in the Pacific Coast Region of North America, 1981-2000. Condor 106:777-790. October 2004
Suryan, R. M., D. B. Irons, M. Kaufman, P. G. R. Jodice, D. D. Roby, J. Benson, and E. D. Brown. 2002. Short-term fluctuations in forage fish availability and the effect on prey selection and brood-rearing in the black-legged kittiwake. Marine Ecology Progress Series 236:273-287. February 2002
Suryan, R. M., D. B. Irons, E. D. Brown, P. G. R. Jodice, and D. D. Roby. 2006. Site-specific effects on productivity of an upper trophic-level marine predator: Bottom-up, top-down, and mismatch effects on reproduction in a colonial seabird. Progress in Oceanography 68:303-328. June 2006
Sheffield, L. M., A. E. Gall, D. D. Roby, D. B. Irons, and K. M. Dugger. 2006. Monitoring planktivorous seabird populations: Validating surface counts of crevice-nesting auklets using mark-resighting. Canadian Journal of Zoology 84:846-854. July 2006
Seiser, P. E., L. K. Duffy, A. McGuire, D. D. Roby, G. H. Golet, and M. A. Litzow. 2000. Comparison of pigeon guillemot, Cepphus columba, blood parameters from oiled and unoiled areas of Alaska eight years after the Exxon Valdez oil spill. Marine Pollution Biology 40:152-164. January 2000
Schreck, C.B, D. D. Roby, K. Dugger, and J. Peterson. 2015. Meeting Cooperator Needs: Examples from the Oregon Cooperative Fish and Wildlife Research Unit. Transactions of the North American Wildlife and Natural Resources Conference 80. Omaha, NE. July 2015
Schreck, C. B., T. P. Stahl, L. E. Davis, D. D. Roby, and B. J. Clemens. 2006. Mortality of juvenile spring-summer Chinook salmon in the lower Columbia River and estuary, 1992-1998: Evidence for delayed mortality? Transactions of the American Fisheries Society 135:457-475. June 2006
Romano, M. D., J. F. Piatt, and D. D. Roby. 2006. Testing the junk food hypothesis on marine birds: effects of prey type on growth and development. Waterbirds 29:407-414. December 2006
Roby, D.D. 2015. Book Review: The Double-crested Cormorant, Plight of a Feathered Pariah, by L.R. Wires. The Auk: Ornithological Advances 132:315-317. January 2015
Roby, D. D., K. Collis, and D. E. Lyons. 2005. Conservation and management for fish-eating birds and endangered salmon. Pp. 161-165 in C. J. Ralph and T. D. Rich (eds. ). Bird conservation implementation and integration in the Americas: Proceedings of the Third International Partners in Flight Conference. USDA Forest Service Gen. Tech. Rep. PSW-GTR-191. October 2005
Roby, D. D., K. Collis, and D. E. Lyons. 2003. Conservation and management for fish-eating birds and endangered salmon. Proceedings of the Third International Partners in Flight Conference, USDA Forest Service. Gen. Tech. Rep. PSW-GTR-191. January 2003
Roby, D. D., K. Collis, D. E. Lyons, D. P. Craig, and M. Antolos. 2003. Caspian Tern Sterna caspia. Pages in Birds of Oregon: A General Reference. D. B. Marshall, M. G. Hunter, and A. L. Contreras (eds. ). Oregon State University Press, Corvallis, OR. January 2003
Roby, D. D., K. Collis, D. E. Lyons, D. P. Craig, J. Y. Adkins, A. M. Myers, and R. M. Suryan. 2002. Effects of colony relocation on diet and productivity of Caspian terns. Journal of Wildlife Management 66:662-673. October 2001
Roby, D. D., D. E. Lyons, D. P. Craig, K. Collis, and G. H. Visser. 2003. Quantifying the effect of predators on endangered species using a bioenergetics approach: Caspian terns and juvenile salmonids in the Columbia River estuary. Canadian Journal of Zoology 81:250-265. January 2003
Rizzolo, D. J., D. Esler, D. D. Roby, and R. L. Jarvis. 2005. Do wintering Harlequin Ducks forage nocturnally at high latitudes? Condor 107:173-177. April 2005
Peck-Richardson, A.G., D.E. Lyons, D.D. Roby, D.A. Cushing, and J.A. Lerczak. 2018. Three-dimensional foraging habitat use and niche partitioning in two sympatric seabird species, Phalacrocorax auritus and P. penicillatus. Marine Ecology Progress Series 586: 251-264. April 2018
Patterson, A. G. L., Kitaysky, A. S., Lyons, D. E., and Roby, D. D. In review. Nutritional stress affects corticosterone deposition in feathers of Caspian tern chicks. Journal of Avian Biology 45:000-000. doi: 10.1111/jav.00397 July 2014
Paredes, R., R. A. Orben, R. M. Suryan, D. B. Irons, D. D. Roby, A. M. A. Harding, R. C. Young, K. Benoit-Bird, C. Ladd, H. Renner, S. Heppell, R. A. Phillips, and A. Kitaysky. 2014. Foraging responses of black-legged kittiwakes to prolonged food-shortages around colonies on the Bering Sea shelf. PLoS ONE 9: e92520. doi: 10.1371/journal.pone.0092520. January 2014
Paredes, R., A.M.A. Harding, D.B. Irons, D.D. Roby, R.M. Suryan, R.A. Orben, H. Renner, R. Young, and A. Kitaysky. 2012. Proximity to multiple foraging habitats enhances seabirds’ resilience to local food shortages. Marine Ecology Progress Series 471:253-269. | Abstract April 2013
Palmer, A. G., D. Nordmeyer, and D. D. Roby. 2003. Effects of jet aircraft overflights on parental care of peregrine falcons. Wildlife Society Bulletin 31:499-509. January 2003
Palmer, A. G., D. L. Nordmeyer, and D. D. Roby. 2001. Factors influencing nest attendance and time-activity budgets of peregrine falcons in interior Alaska. Arctic 54:105-114. January 2001
Palmer, A. G., D. L. Nordmeyer and D. D. Roby. 2004. Nestling provisioning rates of peregrine falcons in interior Alaska. Journal of Raptor Research 38:9-18. April 2004
Murphy, S. M., R. J. Ritchie, D. D. Roby, D. L. Nordmeyer, and A. G. Palmer. 2001. Responses of peregrine falcons to low-level jet aircraft. Invited paper presented at the Effects of Noise on Wildlife Conference, 22-23 August, Goose Bay, Labrador. Institute for Environmental Research and Monitoring. Tern Borealis 2:34-35. Expanded Abstract. January 2001
Mercer, D.M., S.M. Haig, and D.D. Roby. 2013. Phylogeography and population genetic structure of double-crested cormorants (Phalacrocorax auritus). Conservation Genetics 14:823-836. doi: 10.1007/s10592-013-0477-8. | Abstract | Publisher Website April 2013
Matthews, S. E., D. P. Craig, K. Collis, and D. D. Roby. 2003, Double-crested Cormorant Phalacrocorax auritus. Pages 56-58 in Birds of Oregon: A General Reference. D. B. Marshall, M. G. Hunter, and A. L. Contreras (eds. ). Oregon State University Press, Corvallis, OR. January 2003
Marcella, T.K., S.M. Gende, D.D. Roby, and A. Allignol. 2017. Disturbance of a Rare Seabird by Ship-based Tourism in a Marine Protected Area. PLoS One May 2017
Maranto, C.J., J.K. Parrish, D.P. Herman, A.E. Punt, J.D. Olden, M.T. Brett, and D.D. Roby. 2011. Use of fatty acid analysis to determine dispersal of Caspian terns in the Columbia River Basin, U.S.A. Conservation Biology 25: 736-746. January 2011
Lyons, D.E., and D.D. Roby. 2011. Validating growth and development of a seabird as an indicator of food availability: Captive-reared Caspian Tern chicks fed ad libitum and restricted diets. Journal of Field Ornithology 82: 88-100. January 2011
Lyons, D.E., A.G.L. Patterson, J. Tennyson, T.J. Lawes, and D.D. Roby. 2018. The Salton Sea: Critical migratory stopover habitat for Caspian Terns (Hydroprogne caspia) in the North American Pacific Flyway. Waterbirds 41: 154-165. January 2018
Lyons, D. E., D. D. Roby, and K. Collis. 2007. Foraging patterns of Caspian terns and double-crested cormorants in the Columbia River estuary. Northwest Science 81:91-103. May 2007
Lyons, D. E., D. D. Roby, and K Collis. 2005. Foraging Ecology of Caspian Terns in the Columbia River Estuary, USA. Waterbirds 28: 280-291. October 2005
Litzow, M. S., J. F. Piatt, A. K. Prichard and D. D. Roby. 2002. Response of pigeon guillemots to variable abundance of high-lipid and low-lipid prey. Oecologia 132:286-295. October 2002
Lawonn, M.J., D.D. Roby, J.F. Piatt, W.H. Pyle, and R.M. Corcoran. In review. Nest site selection of Kittlitz's murrelets on Kodiak Island, Alaska. Marine Ornithology 46: 33-42. January 2018
Lance, B. K., and D. D. Roby. 2000. Diet and postnatal growth in red-legged and black-legged kittiwakes: an interspecies cross-fostering experiment. Auk 117:1020-1032. October 2000
Jodice, P. G. R., R. B. Lanctot, V. A. Gill, D. D. Roby, and S. A. Hatch. 2000. Sexing adult black-legged kittiwakes by DNA, behavior, and morphology. Waterbirds 23:405-415. October 2000
Jodice, P. G. R., D. D. Roby, S. A. Hatch, V. A. Gill, R. B. Lanctot, and G. H. Visser. 2002. Does food availability affect energy expenditure rates of nesting seabirds? A supplemental-feeding experiment with black-legged kittiwakes (Rissa tridactyla). Canadian Journal of Zoology 80:214-222. October 2001
Jodice, P. G. R., D. D. Roby, R. Suryan, D. B. Irons, K. R. Turco, E. D. Brown, J. F. Thedinga, and G. H. Visser. 2006. Increased energy expenditure by a seabird in response to higher food abundance. Marine Ecology Progress Series. 306:283-293. January 2006
Jodice, P. G. R., D. D. Roby, R. M. Suryan, D. B. Irons, A. M. Kaufman, K. R. Turco, and G. H. Visser. 2003. Variation in Energy Expenditure among Black-Legged Kittiwakes: Effects of Activity-Specific Metabolic Rates and Activity Budgets. Physiological and Biochemical Zoology 76(3):375-388. October 2003
Jodice, P. G. R., D. D. Roby, M. Antolos, D. E. Lyons, D. J. Rizzolo, S. K. Wright, C. D. Anderson, S. K. Anderson, S. K. Nelson, A. E. Gall, and L. Wennerberg. 2003. Review of Biology of Marine Birds by E. A. Schreiber and J. Burger (eds. ). CRC Press, Boca Raton FL. Auk 120:240-245. January 2003
Jodice, P. G. R., D. D. Roby, K. R. Turco, R. M. Suryan, D. B. Irons, J. F. Piatt, M. T. Shultz, D. G. Roseneau, A. B. Kettle. 2008. Growth rates of Black- legged Kittiwake chicks in relation to delivery rate, size and energy density of meals. Marine Ornithology 36:107-114 | Publisher Website October 2008
Jodice, P. G. R., D. D. Roby, K. R. Turco, R. M. Suryan, D. B. Irons, J. F. Piatt, M. T. Shultz, D. G. Roseneau, A. B. Kettle, and J. A. Anthony. 2006. Assessing the nutritional stress hypothesis: the relative influence of diet quantity and quality on seabird productivity. Marine Ecology Progress Series 325:267-279. November 2006
Hostetter, N.J., B. Gardner, A.F. Evans, B.M. Cramer, Q. Payton, K. Collis, and D.D. Roby. Wanted dead or alive: A state-space mark-recapture-recovery model incorporating multiple recovery types and state uncertainty. July 2018
Hostetter, N.J., A.F. Evans, D.D. Roby, and K. Collis. 2012. Susceptibility of juvenile steelhead to avian predation: the influence of individual fish characteristics and river conditions. Transactions of the American Fisheries Society 141:1586-1599. September 2012
Hostetter, N.J., A.F. Evans, D.D. Roby, K. Collis, M. Hawbecker, B.P. Sandford, D.E. Thompson, and F.J. Loge. 2011. Relationship of external fish condition to pathogen prevalence and out-migration survival in juvenile steelhead. Transactions of the American Fisheries Society 140: 1158-1171. October 2011
Hostetter, N.J., A.F. Evans, B.M. Cramer, K. Collis, D.E. Lyons, D.D. Roby. 2015. Quantifying avian predation on fish populations: Integrating predator-specific deposition probabilities in tag-recovery studies. Transactions of the American Fisheries Society 144:410-422. | Abstract June 2015
Harding, A., R. Paredes, R. Suryan, D. Roby, D. Irons, R. Orben, H. Renner, R. Young, C. Barger, and I. Dorresteijn. 2013. Does location really matter? An inter-colony comparison of seabirds breeding at varying distances from productive oceanographic features in the Bering Sea. Deep-Sea Research II 94:178-191. | Abstract January 2013
Golet, G. H., P. E. Seiser, A. D. McGuire, D. D. Roby, J. B. Fischer, K. J. Kuletz, D. B. Irons, T. A. Dean, S. G. Jewett and S. H. Newman. 2002. Long-term direct and indirect effects of the "Exxon Valdez" oil spill on pigeon guillemots in Prince William Sound AK. Marine Ecology Progress Series 241:287-304. October 2002
Golet, G. H., K. J. Kuletz, D. D. Roby, and D. B. Irons. 2000. Adult prey choice affects chick growth and reproductive success of Pigeon Guillemots. Auk 117:82-91. January 2000
Gall, A. E., D. D. Roby, D. B. Irons, and I. C. Rose. 2006. Differential Response in Chick Survival to Diet in Least and Crested Auklets. Marine Ecology Progress Series 308:279-291. June 2006
Fischer, K.N., R.M. Suryan, D.D. Roby, and G.R. Balogh. 2009. Post-breeding season distribution of black-footed and Laysan albatrosses satellite-tagged in Alaska: interspecific differences in spatial overlap with North Pacific fishers. Biological Conservation 142:752-760. July 2009
Fagre, D.B., C.W. Charles, C.D. Allen, C. Birkeland, F.S. Chapin III, P.M. Groffman, G.R. Gunternspergen, A.K. Knapp, A.D. McGuire, P.J. Mulholland, D.P.C. Peters, D.D. Roby, and G. Sugihara. 2009. Thresholds of climate change in ecosystems. A report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research. U.S. Geological Survey, Reston VA, USA. 170 pages. January 2009
Evans, A.F., Q. Payton, A. Turecek, B. Cramer, K. Collis, D.D. Roby, P.J. Loschl, L. Sullivan, J. Skalski, M. Weiland, and C. Dotson. In review. Avian predation on juvenile salmonids: spatial and temporal analysis based on acoustic and passive integrated transponder tags. Transactions of the American Fisheries Society 145:860-877. | Abstract June 2016
Evans, A.F., N.J. Hostetter, D.D. Roby, K. Collis, D.E. Lyons, B.P. Sandford, and R.D. Ledgerwood. 2012. Systemwide evaluation of avian predation on juvenile salmonids from the Columbia River based on recoveries of Passive Integrated Transponder tags. Transactions of the American Fisheries Society 141:975-989. July 2012
Evans, A.F., D.D. Roby, K. Collis, B.M. Cramer, J.A. Sheggeby, L.J. Adrean, D.S. Battaglia, and D.E. Lyons. 2011. Recovery of coded wire tags at a Caspian tern colony in San Francisco Bay: A technique to evaluate impacts of avian predation on juvenile salmonids. North America Journal of Fisheries Management 31: 79-87. January 2011
Evans, A. F., N. J. Hostetter, K. Collis, D. D. Roby, and F. J. Loge. 2014. Relationship between juvenile fish condition and survival to adulthood in steelhead. Transactions of the American Fisheries Society 143:899-909. doi: 10.1080/00028487.2014.901248. April 2014
Cushing, D.A., D.D. Roby, and D.B. Irons. 2018. Patterns of distribution, abundance, and change over time in a subarctic marine bird community. Deep-Sea Research II 147: 148-163. January 2018
Courtot, K.N., Roby, D.D., Adkins, J.Y., Lyons, D.E., King, D.T., and Larsen, R.S. 2012. Colony connectivity of Pacific Coast double-crested cormorants based on post-breeding dispersal from the region's largest colony. Journal of Wildlife Management 76:1462-1471. September 2012
Courtot, K. N., D. D. Roby, L. H. Kerr, D. E. Lyons, J. Y. Adkins. A Low-disturbance Capture Technique for Ground-nesting Double-crested Cormorants (Phalacrocorax auritus). | Abstract June 2016
Connon, R.E., L.S. D’Abronzo, N.J. Hostetter, A Javidmehr, D.D. Roby, A.F. Evans, F.J. Loge, and I. Werner. 2012. Transcription profiling in environmental diagnostics: Health assessments in Columbia River basin steelhead (Oncorhynchus mykiss). Environmental Science and Technology 46:6081-6087. | Abstract October 2012
Collis, K., D.D. Roby, K.W. Larson, L.J. Adrean, S.K. Nelson, A.F. Evans, N.J. Hostetter, D.S. Battaglia, D.E. Lyons, T.K. Marcella, and A. Patterson. 2012. Trends in Caspian tern nesting and diet in San Francisco Bay: Conservation implications for terns and salmonids. Waterbirds 35:25-34. March 2012
Collis, K., D. D. Roby, D. P. Craig, S. Adamany, J. Y. Adkins, and D. E. Lyons. 2002. Colony size and diet composition of piscivorous waterbirds on the lower Columbia River: Implications for losses of juvenile salmonids to avian predation. Transactions of the American Fisheries Society 131: 537-550. May 2002
Collis, K., D. D. Roby, D. P. Craig, B. A. Ryan, and R. D. Ledgerwood. 2001. Colonial waterbird predation on juvenile salmondis tagged with passive integrated transponders in the Columbia River estuary: vulnerability of different salmonid species, stocks, and rearing types. Transactions of the American Fisheries Society 130:385-396. January 2001
Collis, K., D. D. Roby, C. W. Thompson, D. E. Lyons, and M. Tirhi. 2002. Barges as temporary breeding sites for Caspian terns: assessing potential sites for colony restoration. Wildlife Society Bulletin 30:1140-1149. October 2002
Collar, S., D. D. Roby, and D. E. Lyons. Top-down and bottom-up interactions influence nesting success at the world's largest colony of Caspian terns (Hydroprogne caspia) in the Columbia River estuary. | Abstract April 2017
Chen, S., Z. Fan, D.D. Roby, Y. Lu, C. Chen, Q. Huang, L. Cheng, and J. Zhu. 2015. Human harvest, climate change and their synergistic effects drove the Chinese Crested Tern to the brink of extinction. Global Ecology and Conservation 4:137-145. | Abstract July 2015
Barbaree, B. A., S. K. Nelson, B. D. Dugger, D. D. Roby, H. R. Carter, D. L. Whitworth, and S. H. Newman. 2014. Nesting ecology of Marbled Murrelets at a remote mainland fjord in southeast Alaska. Condor: Ornithological Applications 116:173-184. January 2014
Antolos, M., D. D. Roby, and K. Collis. 2004. Breeding ecology of Caspian terns at colonies on the Columbia Plateau. Northwest Science 78:303-312. January 2005
Antolos, M., D. D. Roby, D. E. Lyons, S. K. Anderson, and K. Collis. 2006. Effects of nest density, location and timing on breeding success of Caspian terns. Waterbirds 29:465-472. December 2006
Antolos, M., D. D. Roby, D. E. Lyons, K. Collis, A. F. Evans, M. Hawbecker, and B. A. Ryan. 2005. Caspian tern predation on juvenile salmonids in the Mid-Columbia River. Transactions of the American Fisheries Society 134:466-480. April 2005
Anthony, J. A., D. D. Roby, and K. R. Turco. 2000. Lipid content and energy density of forage fishes from the northern Gulf of Alaska. Journal of Experimental Marine Biology and Ecology 248:53-78. January 2000
Anderson, S. K., D. D. Roby, D. E. Lyons, and K. Collis. 2007. Relationship of Caspian tern foraging ecology to nesting success in the Columbia River estuary, Oregon USA. Estuarine, Coastal, and Shelf Science 73:447-456. March 2007
Anderson, S. K., D. D. Roby, D. E. Lyons, and K. Collis. 2005. Factors affecting chick provisioning by Caspian terns nesting in the Columbia River estuary. Waterbirds 28:95-105. January 2005
Anderson, C. D., D. D. Roby, and K. Collis. 2004. Foraging patterns of male and female double-crested cormorants nesting in the Columbia River estuary. Canadian Journal of Zoology 82:541-554. September 2004
Anderson, C. D., D. D. Roby, and K. Collis. 2004. Conservation implications of the large colony of double-crested cormorants on East Sand Island, Columbia River estuary, Oregon USA. Waterbirds 27:155-160. April 2004
Adrean, L.J., D.D. Roby, D.E. Lyons, K. Collis, and A.F. Evans. 2012. Potential effects of management on Caspian tern (Hydroprogne caspia) predation on juvenile salmonids at a colony in San Francisco Bay, California. Transactions of the American Fisheries Society 141:1682-1696. (S) | Abstract October 2012
Adkins, J.Y., D.E. Lyons, P.J. Loschl, D.D. Roby, K. Collis, A.F. Evans, and N.J. Hostetter. 2014. Demographics of piscivorous colonial waterbirds and management implications for ESA-listed salmonids on the Columbia Plateau. Northwest Science 88:344-359. | Abstract January 2015
Adkins, J.Y., D.D. Roby, D.E. Lyons, K.N. Courtot, K. Collis, H.R. Carter, W.D. Shuford, P.J. Capitolo. In press. Estimated Population Size, Trends, and Limiting Factors for the Double-crested Cormorant in Western North America. Journal of Wildlife Management 78:000-000. December 2014
Project Completion Date
Intra-guild predator dynamics: the effects of recolonizing gray wolf populations on cougars in northeast Oregon. June 2019
Developing Non-Invasive Methods to Monitor Burrow-nesting Seabird Populations January 2017
Conservation of the Critically Endangered Chinese Crested Tern: Restoration of a Lost Breeding Colony March 2019
Monitor and Evaluate Caspian Terns and their Impacts on the Survival of Juvenile Salmonids in the Columbia River Estuary November 2015
Develop Baseline Information on Double-crested Cormorants Relative to Their Impacts on Survival of Salmonid Smolts in the Columbia River Estuary September 2015
Mapping Physical Characteristics of the Columbia River Mouth Using Transmittered Diving Waterbirds December 2015
Evaluation of Caspian tern management to reduce predation on ESA-listed salmonids in the Columbia Plateau region March 2019
Understanding the Extent and Severity of Disturbance by Cruise Ships to Kittlitz's Murrelets in Glacier Bay National Park, Alaska April 2014
Long-term Changes in Marine Bird Populations of Prince William Sound, Alaska December 2015
Breeding Biology and Nesting Habitat of Kittlitz's Murrelet in Kodiak National Wildlife Refuge, Alaska October 2012
Seabird Telemetry Project - BSIERP March 2013
Evaluate the Impacts of Avian Predation on Salmonid Smolts from the Columbia and Snake Rivers March 2014
Evaluate Management of Caspian Terns and Develop Baseline Information on Double-crested Cormorants Relative to their Impact on Salmonid Smolts in the Columbia River Estuary February 2013
Avian Predation on Juvenile Salmonids in the Lower Columbia River January 2019
Pigeon guillemot restoration research in Prince William Sound December 2011
Evaluating the translocation of albatross chicks as a mechanism for establishing a new breeding colony and determining albatross habitat associations in the North Pacific November 2009
Diet Composition and Reproductive Energetics of a Rare and Declining Seabird, the Kittlitz's Murrelet December 2010
Biological Investigations of Yaquina Head Outstanding Natural Area December 2009
Presentations Presentation Date
Zamon, J., E. Phillips, D.D. Roby, D.E. Lyons, K. Collis, and J. Adams. 2015. Food web links between seabirds and pelagic schooling fishes in the estuary, plume, and nearshore marine habitats of the Columbia River. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, CA, 20 February. February 2015
Suzuki, Y., D.D. Roby, M.A. Bishop, and M.L. Kissling. 2013. Caspian Tern invasion of Alaska? Northward breeding range expansion of the Pacific Coast population. 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Suzuki, Y., D.D. Roby, K.M. Dugger, J.A. Gervais, D.E. Lyons, R.M. Suryan, and K. Collis. Management fairy tale or nightmare? Demography and inter-colony dispersal of Caspian terns in the Pacific Coast region of North America. 19th Annual Conference of The Wildlife Society, Portland, OR. October 2012
Suzuki, Y., D.D. Roby, K.M. Dugger, J.A. Gervais, D.E. Lyons, R.M. Suryan, and K. Collis. 2014. Long-distance dispersal results in a large-scale metapopulation of Caspian terns in western North America. 26th International Ornithological Congress, Tokyo, Japan. August 2014
Suzuki, Y., D.D. Roby, K. Collis, D.E. Lyons, A.F. Evans, P.J. Loschl, T. Lawes, K. Bixler, S. Collar, A. Peck-Richardson, A. Mohoric, and M. Hawbecker. 2013. Implementation of the Caspian Tern Management Plan: Status of tern colonies in the Columbia River estuary and at Corps-constructed colony sites. Anadromous Fish Evaluation Program Annual Review, Walla Walla, WA. December 2013
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, T.J. Lawes, and K.S. Bixler. 2016. Response of Caspian Terns to reductions in available nesting habitat. Special Paper Session on Tern Colony Restoration and the Development of Conservation Networks: Breeding and Non-breeding Periods, 43rd Annual Meeting of the Pacific Seabird Group, Kahuku, HI. February 2016
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, T.J. Lawes, K.S. Bixler, and K. Collis. 2017. Footloose and fancy-free: survival, age at first return, and breeding in Caspian Terns. 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, T.J. Lawes, K.S. Bixler, K. Collis, and M. Hawbecker. 2017. Connectivity of managed and un-managed Caspian tern breeding colonies as revealed by resightings of banded individuals and progress update on tern population modeling. Avian Predation Workshop, U.S. Army Corps of Engineers, The Dalles, Oregon. 2 March. March 2017
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, T.J. Lawes, K.S. Bixler, K. Collis, and M. Hawbecker. 2014. Connectivity of managed and un-managed Caspian tern breeding colonies as revealed by resightings of banded individuals. Avian Predation Workshop, Walla Walla, WA, 3 December. (Invited) December 2014
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, T. Lawes, K. Bixler, K. Collis, and M. Hawbecker. Connectivity of managed and unmanaged Caspian tern breeding colonies as revealed by resightings of banded individuals. 2014 Anadromous Fish Evaluation Program Annual Review, Portland, Oregon. December 2014
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, T. Lawes, K. Bixler, K. Collis, and H. Hawbecker. 2015. Connectivity of managed and un-managed Caspian tern colonies as revealed by resightings of banded individuals. 2015 Avian Predation Workshop, The Dalles, OR. November 2015
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, K.N. Courtot, and K. Collis. 2015. Novel non-lethal approaches to managing fisheries-cormorant conflicts. Annual Meeting of The Waterbird Society, Bar Harbor, Maine. August 2015
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, T. Lawes, and K.S. Bixler. 2014. Age matters? Influence of management practices on age-specific colony arrival dates and age distribution in Caspian Terns. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Suzuki, Y., D.D. Roby, D.E. Lyons, P.J. Loschl, K.S. Bixler, and T. Lawes. 2015. Colony site fidelity in Caspian terns despite limited nesting habitat: When to stay and when to go. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Suzuki, Y., D.D. Roby, D.E. Lyons, N. Schumaker, and D. Dishman. 2016. Progress report: Developing a Caspian tern population model for the Pacific Flyway population. Presented to the Caspian Tern Adaptive Management Team, Portland, OR. September 2016
Suzuki, Y., D.D. Roby, D.E. Lyons, K.M. Dugger, P.J. Loschl, T.J. Lawes, K.S. Bixler, and K. Collis. 2015. Connectivity of managed and un-managed Caspian Tern colonies in the Pacific Coast region of North America. 2nd World Seabird Conference, Cape Town, South Africa. October 2015
Suzuki, Y. D.D. Roby, D.E. Lyons, P.J. Loschl, and K.N. Courtot, B. Cramer, and K. Collis. 2015. Novel Non-Lethal Approaches to Managing Fisheries-Cormorant Conflicts in Western North America. July 2015
Suryan, R.M., A.J. Gladics, B. Bridgeland, S.W. Stephensen, R. Swift, R.W. Lowe, and D.D. Roby. 2015. TESTING ACOUSTIC RECORDERS AND REMOTE CAMERAS TO MONITOR BREEDING POPULATIONS OF LEACH’S STORM-PETREL. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Strong, C., R. Golightly, S. Schneider, K. Nelson, C. Horton, L. Adrean, J. Rivers, D.D. Roby, and M. Betts. 2018. Bailing on the California Current: Marbled Murrelet and other seabird response to unusual conditions in Oregon and northern California. 45th Annual Meeting of the Pacific Seabird Group, La Paz, Baja California Sur, Mexico, 21-24 February. February 2018
Schreck, C.B., D.D. Roby, K. Dugger, and J. Peterson. 2015. Meeting Cooperator needs: Examples from the Oregon Cooperative Fish and Wildlife Research Unit. North American Wildlife & Natural Resources Conference, Omaha, NE, 8-13 March. (Invited) March 2015
Roby, D.D., Y. Suzuki, D.E. Lyons, J. Heinrichs, and N. Schumaker. 2018. Modeling population dynamics of a conservation reliant seabird: Caspian Terns in the Pacific Flyway of North America. 42nd Annual Meeting of the Waterbird Society, Vancouver, B.C., Canada August 2018
Roby, D.D., Y. Lu, D. Chen, S. Chan, X. Zhou, Z. Fan, D.E. Lyons, S. Wang, J. Yang, and S. Chen. 2018. Close colony monitoring uncovers new threats to nesting success in the critically endangered Chinese Crested Tern. International Ornithological Congress 2018, Vancouver, British Columbia, Canada. August 2018
Roby, D.D., S.W. Kress, D.E. Lyons, S. Chen, S. Chan, Y. Suzuki, and T.J. Laws. 2015. Conservation Value of Active Seabird Colony Restoration following Rat Eradication on Islands. Symposium on Conservation of Breeding Seabirds on Islands: Control of Predators and Social Attraction, International Wildlife Management Congress, Sapporo, Japan. July 2015
Roby, D.D., P.J. Loschl, K. Collis, D.E. Lyons, K.S. Bixler, Y. Suzuki, T.J. Lawes, and A. Turecek. 2017. Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids by Caspian terns nesting at East Sand Island, 2017. Annual Review of the Anadromous Fish Evaluation Program, Richland, WA, 29 November. November 2017
Roby, D.D., K. Collis, P. Loschl, D. Lyons, Y. Suzuki, T. Lawes, A. Munes, J. Mulligan, E. Schniedermeyer, A. Evans, B. Cramer, A. Turecek, and Q. Payton. 2015. Inland Avian Predation Management Plan: Status of Caspian tern breeding colonies in the Columbia Plateau region, 2015. 2015 Avian Predation Workshop, The Dalles, OR. November 2015
Roby, D.D., K. Collis, D.E. Lyons, P.J. Loschl, Y. Suzuki, B. Caillouet, O. Bailey, T.J. Lawes, A.F. Evans, B. Cramer, A. Turecek, and Q. Payton. 2017. Caspian Tern Management Plan for the Columbia River Estuary: Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids in the Columbia River estuary, 2016. Avian Predation Workshop, U.S. Army Corps of Engineers, The Dalles, Oregon. 2 March. March 2017
Roby, D.D., K. Collis, D.E. Lyons, P.J. Loschl, Y. Suzuki, B. Caillouet, O. Bailey, T.J. Lawes, A.F. Evans, B. Cramer, A. Turecek, and Q. Payton. 2016. Caspian Tern Management Plan for the Columbia River Estuary: Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids in the Columbia River estuary, 2016. 2016 Anadromous Fish Evaluation Program Annual Review, Portland, Oregon. November 2016
Roby, D.D., K. Collis, D.E. Lyons, P.J. Loschl, T.J. Lawes, Y. Suzuki, K.S. Bixler, A. Piggott, A.F. Evans, B. Cramer, C. Horton, and M. Hawbecker. 2014. Status of Caspian tern breeding colonies at both managed and un-managed sites in the Columbia Basin and at Corps-constructed islands. Avian Predation Workshop, Walla Walla, WA, 3 December 2014. (Invited) December 2014
Roby, D.D., K. Collis, D.E. Lyons, A.F. Evans, Y. Suzuki, P.J. Loschl, A. Peck-Richardson, B. Cramer, J.Y. Adkins, T. Lawes, K.S. Bixler, J. Zamon, D. Kuligowski, and M. Hawbecker. 2013. Ecological developments at the double-crested cormorant colony on East Sand Island: Status, dispersal, management pilot studies, and implications for salmonid restoration. Anadromous Fish Evaluation Program Annual Review, Walla Walla, WA. December 2013
Roby, D.D., K. Collis, D.E. Lyons, A.F. Evans, Y. Suzuki, J.Y. Adkins, P.J. Loschl, T. Lawes, N. Hostetter, A. Peck-Richardson, A. Patterson, B. Cramer, S. Collar, K. Bixler, J. Zamon, D. Kuligowski, and M. Hawbecker. AVIAN PREDATION ON JUVENILE SALMONIDS IN THE COLUMBIA RIVER ESTUARY: NEW DEVELOPMENTS IN 2012. Anadromous Fish Evaluation Program Annual Review, Portland, OR. November 2012
Roby, D.D., K. Collis, D. Lyons, C. Baird, T. Lawes, P. Loschl, Y. Suzuki, A. Piggott, A. Wilson, C. Congdon, A. Evans, B. Cramer, A. Turecek, and Q. Payton. 2015. Caspian Tern Management Plan for the Columbia River Estuary: Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids in the Columbia River estuary. 2015 Avian Predation Workshop, The Dalles, OR November 2015
Roby, D.D., K. Collis, A.F. Evans, D.E. Lyons, P.J. Loschl, Y. Suzuki, K. Bixler, B. Cramer, M. Hawbecker, and T. Lawes. 2013. Pre-management status of Caspian tern colonies in the Columbia Plateau region: Foraging behavior, connectivity, and reliance on juvenile salmonids. Anadromous Fish Evaluation Program Annual Review, Walla Walla, WA. December 2013
Roby, D.D., K. Collis, A.F. Evans, D.E. Lyons, P.J. Loschl, N. Hostetter, K. Bixler, J. Tennyson, K. Dickson, G. Gasper, B. Cramer, Y. Suzuki, M. Hawbecker, and T. Lawes. 2012. Avian predation on juvenile salmonids on the Columbia Plateau: New findings in 2012. Anadromous Fish Evaluation Program Annual Review, Portland, OR. November 2012
Roby, D.D., K. Collis, A.F. Evans, D.E. Lyons, P.J. Loschl, N. Hostetter, K. Bixler, J. Tennyson, K. Dickson, G. Gasper, B. Cramer, Y. Suzuki, M. Hawbecker, and T. Lawes. 2012. Avian predation on juvenile salmonids on the Columbia Plateau: New findings in 2012. Anadromous Fish Evaluation Program Annual Review, Portland, OR. November 2012
Roby, D.D., D.E. Lyons, and S. Collar. 2013. Tern restoration in North America. Chinese Crested Tern Training Workshop, Xiangshan, Zhejiang, P.R. China. March 2013
Roby, D.D., D.E. Lyons, and S. Collar. 2013. Conservation and restoration of tern colonies in North America: Relevance for saving the endangered Chinese crested tern. Plenary Lecture for the China Ornithological Conference, Hangzhou, P.R. China. November 2013
Roby, D.D., D.E. Lyons, and S. Collar. 2013. Caspian tern restoration research in North America. Cross-strait Conference on Tern Conservation, Matsu Islands, Taiwan. July 2013
Roby, D.D., D.E. Lyons, Y. Suzuki, T. Lawes, P. Loschl, K. Bixler, S.W. Kress, S. Chen, and S. Chan. 2016. Restoring seabird colonies using social attraction: The conservation legacy of Project Puffin. Keynote Lecture at the Willamette Valley Bird Symposium, Corvallis, Oregon. January 2016
Roby, D.D., D.E. Lyons, Y. Suzuki, S. Collar, K. Collis, and S.W. Kress. 2014. Conservation and restoration of tern colonies in North America. 26th International Ornithological Congress, Tokyo, Japan. August 2014
Roby, D.D., D.E. Lyons, Y. Suzuki, P.J. Loschl, O. Bailey, and T.J. Lawes. 2016. Caspian Tern Management Plan for the Columbia River Estuary: Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids. Preliminary overview of 2016 results presented to the Caspian Tern Adaptive Management Team, 28 September, Portland, OR. (Invited) September 2016
Roby, D.D., D.E. Lyons, Y. Suzuki, J.Y.Adkins, P.J. Loschl, and T.J. Lawes. 2017. Long-term studies of breeding seabirds in the Columbia River estuary: transformative change and responsible forcing factors. Symposium on the Values of Long-Term Studies: Insight & Synthesis, 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Roby, D.D., D.E. Lyons, Y. Suzuki, J.Y. Adkins, A. Peck-Richardson, P.J. Loschl, and K.S. Bixler. 2016. Cormorants and Threatened Salmon in the Columbia River Estuary: a Management Conundrum. North American Ornithological Conference 2016, Washington, D.C. 16-20 August. August 2016
Roby, D.D., D.E. Lyons, T.J. Lawes, Y. Suzuki, K. Bixler, and K. Collis. 2016. Conservation networks of artificial islands for breeding Caspian Terns. 43rd Annual Meeting of the Pacific Seabird Group, Kahuku, Hawaii. February 2016
Roby, D.D., D.E. Lyons, T.J. Lawes, Y. Suzuki, K. Bixler, and K. Collis. 2015. The keys to successful restoration of tern colonies and their application to recovery of a critically endangered species. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Roby, D.D., D.E. Lyons, T.J. Lawes, P.J. Loschl, A.F. Evans, A. Piggott, K. Collis, and B. Cramer. 2014. Status of Caspian tern breeding colonies at both managed and un-managed sites in the Columbia Basin and at Corps-constructed islands. 2014 Anadromous Fish Evaluation Program Annual Review, Portland, Oregon. December 2014
Roby, D.D., D.E. Lyons, S. Collar, and P.J. Loschl. 2015. Top-down and bottom-up influences on large, sympatric colonies of Caspian Terns and Double-crested Cormorants. Symposium on Seabirds as Prey, Second World Seabird Conference, Cape Town, South Africa. October 2015
Roby, D.D., D.E. Lyons, K. Collis, Y. Suzuki, A.F. Evans, J.Y. Adkins, P.J. Loschl, T.J. Lawes, K.S. Bixler, A. Patterson, and S. Collar. 2013. An interesting tern of events: Learning from Caspian Terns and other salmon-eating waterbirds about what matters most for coastal colonial seabirds. Plenary talk for the 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Roby, D.D., D.E. Lyons, K. Collis, P.J. Loschl, and A.F. Evans. 2012. Effects of fish-eating birds on Columbia River salmonids. Symposium on Managing Human-Wildlife Conflict in the Pacific Northwest. 19th Annual Conference of The Wildlife Society, Portland, OR, 15 October. [Invited] October 2012
Roby, D.D., D.E. Lyons, J.Y. Adkins, Y. Suzuki, A. Peck-Richardson, P.J. Loschl, K.S. Bxler, and K. Collis. 2015. Population Dynamics and Management of the Western North America Population of the Double-crested Cormorant. Symposium: Towards Sustainable, Knowledge-based Cormorant Management: Combining Learning and Experiences from North America, Europe, and Japan, International Wildlife Management Congress, Sapporo, Japan. July 2015
Roby, D.D., D.E. Lyons, J.Y. Adkins, Y. Suzuki, A. Peck-Richardson, P.J. Loschl, K.S. Bixler, and K. Collis. 2015. The Western North America Population of Double-crested Cormorants: Beginnings of Management. Symposium on Cormorant Management: Learning from Case Studies in the U.S. and Europe, Lake Biwa Museum, Japan. (Invited) July 2015
Roby, D.D., D.E. Lyons, J.Y. Adkins, Y. Suzuki, A. Peck-Richardson, P.J. Loschl, K.S. Bixler, and K. Collis. 2015. Cormorants and ESA-listed Salmonids in the Columbia River Estuary: the Management Conundrum. Recent Advances in the Biology and Management of Double-crested Cormorants, Waterbirds Society Annual Meeting, Bar Harbor, Maine. August 2015
Roby, D.D., D.E. Lyons, J.Y. Adkins, Y. Suzuki, A. Peck-Richadson, P.J. Loschl, K.S. Bixler, and K. Collis. 2016. Cormorants and ESA-listed Salmonids in the Columbia River Estuary: the Management Conundrum. 50th Annual Meeting of the Oregon Chapter of The Wildlife Society, Seaside, Oregon. February 2016
Roby, D.D., D.E. Lyons, J.Y. Adkins, A. Peck-Richardson, Y. Suzuki, P.J. Loschl, K.S. Bixler, and K. Collis. 2015. Proposal for a major cull of Double-crested Cormorants in the Columbia River estuary: science-based or politics-driven? 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Roby, D.D. 2018. Avian predation on juvenile salmonids. Monthly meeting of the Northwest Power and Conservation Council, Eugene, OR, 11-12 September. September 2018
Roby, D.D. 2018. Avian predation on juvenile salmonids in the Columbia River basin, a research project status review. Independent Scientific Review Panel and the Northwest Power and Conservation Council, Portland, OR, 27-28 August. August 2018
Roby, D.D. 2017. Restoring tern colonies using social attraction: the crucial role of monitoring. Chinese Crested Tern Conservation Conference, Matsu Islands, Taiwan, 10 November. November 2017
Roby, D.D. 2017. Environmental conservation in the United States and the science behind it. Workshop on Environmental Protection and Enforcement, Ministry of Economy and Planning, Riyadh, Kingdom of Saudi Arabia, 13-14 September 2017. September 2017
Roby, D.D. 2015. Status of Caspian Tern breeding colonies at managed and unmanaged sites in the Columbia Basin and at Corps-constructed islands. Briefing to the Northwest Power and Conservation Council, Portland, OR, 5 May. (Invited) May 2015
Rivers, J.W., S.K. Nelson, L.J. Adrean, C.A. Horton, D.D. Roby, and M.G. Betts. 2018. An update on the Oregon Marbled Murrelet Project: unexpected results characterize the 2017 breeding season. Joint annual meeting of the Oregon Chapter of The Wildlife Society, the Washington Chapter of The Wildlife Society, the Society for Northwestern Vertebrate Ecology, and the Northwestern Partners in Amphibians and Reptile Conservation, Portland, OR, 13-16 February. February 2018
Rivers, J.W., J.M. Northrup, M.G. Betts, S.K. Nelson, and D.D. Roby. 2016. Evaluating Space Use and Reproductive Success of the Threatened Marbled Murrelet in Western Oregon. North American Ornithological Conference, Washington, D.C. 16-20 August. August 2016
Rivers, J., L. Adrean, M. Pickett, B. Taggart, S.K. Nelson, D.D. Roby, and M. Betts. 2017. Testing whether unmanned aerial vehicles can be used to locate cryptic nests of the Marbled Murrelet. Joint Annual Meeting of the American Ornithological Society and the Society of Canadian Ornithologists/Société des Ornithologistes du Canada, East Lansing, MI, 1-5 August 2017. August 2017
Piggott, A.R.H., D.E. Lyons, and D.D. Roby. 2014. Dietary overlap and coexistence of two sympatric piscivorous seabirds: Competition or superabundant prey? 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Piggott, A.R., S.B. Stark, B.R. Higgins, D.B. Irons, and D.D. Roby. 2017. Beggars can't be choosers: successful breeding on a poor quality diet. 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Piggott, A.R., D.E. Lyons, Y. Suzuki, K. Bixler, B. Cramer, A. Turecek, A. Laws, and D.D. Roby. 2015. Nest-site fidelity at the largest breeding colony of Double-crested Cormorants (Phalacrocorax auritus) in North America. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Piggott, A.R., D.E. Lyons, J.M. Lawonn, K.S. Bixler, M.J. Hipfner, and D.D. Roby. 2016. NOVEL PREY IN SEABIRD DIETS: INDICATORS OF CLIMATE REGIME SHIFTS. 43rd Annual Meeting of the Pacific Seabird Group, Oahu, Hawaii. February 2016
Peck-Richardson, A.G., D.E. Lyons, K.N. Courtot, B.M. Cramer, and D.D. Roby. 2015. Using satellite telemetry to predict dispersal of Double-crested Cormorants following habitat reduction at the largest breeding colony in North America. Annual Meeting of The Waterbird Society, Bar Harbor, Maine. August 2015
Peck-Richardson, A.G., D.E. Lyons, D.A. Cushing, J.A. Lerczak, and D.D. Roby. 2016. FORAGING HABITAT USE AND NICHE PARTITIONING IN TWO SYMPATRIC CORMORANT SPECIES NESTING IN THE COLUMBIA RIVER ESTUARY, OREGON. 43rd Annual Meeting of the Pacific Seabird Group, Oahu, Hawaii. February 2016
Peck-Richardson, A.G., D.E. Lyons, B.M. Cramer, K.N. Courtot, J.M. Mannas, and D.D. Roby. 2015. INITIAL RESPONSE AND DISPERSAL OF DOUBLE-CRESTED CORMORANTS FOLLOWING HABITAT REDUCTION AT THE LARGEST BREEDING COLONY IN NORTH AMERICA. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Patterson, A.G.L., D.E. Lyons, D.D. Roby, P.J. Loschl, and T.J. Lawes. 2014. Females forage farther: Bi-modal foraging distribution of Caspian Terns breeding at a colony in interior Washington. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Patterson, A., D.D. Roby, D.E. Lyons, and K. Collis. 2013. Using artificial islands and social attraction to establish new Caspian Tern colonies in the Upper Klamath Basin, California. 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Patterson, A., A. Kitaysky, D.E. Lyons, and D.D. Roby. 2013. Corticosterone in feathers – A cautionary tale of nutritionally-stressed Caspian Tern chicks. 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Paredes, R., H. Renner, D.B. Irons, R.A. Orben, R.M. Suryan, B. Drummond, D.D. Roby, and G. Dell’Omo. Partitioning of pelagic resources revealed by GPS tracking of breeding Red-legged and Black-legged kittiwakes. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Paredes, R., D.B. Irons, D.D. Roby, Y. Tremblay, R. Young, A.M.A. Harding, R.A. Orben, R. M. Suryan, H. Renner, A. Will, and A. Kitaysky. 2013. Three dimensional spatial use of marine habitats provides insight into the contrasting population trends of a deep-diving seabird in the Bering Sea. 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Orben, R.A., R. Paredes, D.D. Roby, D.B. Irons, and S.A. Shaffer. 2015. BODY SIZE PREDICTS INDIVIDUAL WINTER FORAGING STRATEGIES OF THICK-BILLED MURRES (URIA LOMVIA) IN THE BERING SEA. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Northrup, J.M., J.W. Rivers, S.K. Nelson, D.D. Roby, L.J. Adrean, and M.G. Betts. 2017. Spatiotemporal patterns of corvid distribution and abundance in areas occupied by Marbled Murrelets. 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Nelson, S.K., J.M. Northrup, D.D. Roby, M.G. Betts, L.J. Adrean, and J.W. Rivers. 2017. Evaluating space use and reproductive success of the threatened Marbled Murrelet in western Oregon. 44th Annual Meeting of the Pacific Seabird Group. Tacoma, Washington. February 2017
Nelson, S.K., J. Northrup, J. Rivers, D.D. Roby, and M. Betts. 2018. The influence of climate change, habitat loss, and predator distribution on the distribution of Marbled Murrelets over 30 years in the Pacific Northwest. 45th Annual Meeting of the Pacific Seabird Group, La Paz, Baja California Sur, Mexico, 21-24 February. February 2018
Marcella, T.K., S.M. Gende, and D.D. Roby. 2013. Cruise ship disturbance to Kittlitz’s Murrelets in Glacier Bay National Park, Alaska. 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Lyons, D.E., T.J. Lawes, P.J. Loschl, Y. Suzuki, K.S. Bixler, E. Schniedermeyer, K. Collis, A. Evans, B. Cramer, and D.D. Roby. 2017. Caspian tern responses to the Inland Avian Predation Management Plan as indicated using satellite telemetry and resighting of banded individuals. Avian Predation Workshop, Richland, WA, 29 November. November 2017
Lyons, D.E., T.J. Lawes, P.J. Loschl, Y. Suzuki, K.S. Bixler, E. Schniedermeyer, K. Collis, A. Evans, B. Cramer, and D.D. Roby. 2017. Caspian tern response to management at Goose Island, Potholes Reservoir, and Crescent Island, McNary Reservoir, as indicated using satellite telemetry. Avian Predation Workshop, U.S. Army Corps of Engineers, The Dalles, Oregon. 2 March. March 2017
Lyons, D.E., T.J. Lawes, A. Patterson, D.D. Roby, Y. Suzuki, and P.J. Loschl. 2016. Migration and winter movements of Pacific Flyway Caspian Terns. 43rd Annual Meeting of the Pacific Seabird Group, Oahu, Hawaii. February 2016
Lyons, D.E., J. Tennyson, A. Patterson, D.D. Roby, Y. Suzuki, and P.J. Loschl. 2015. Caspian Tern migration and overwintering behavior in western North America. 2nd World Seabird Conference, Cape Town, South Africa. October 2015
Lyons, D.E., J. Tennyson, A. Patterson, D.D. Roby, Y. Suzuki, and P. Loschl. 2015. Initial Response of Caspian Terns to a Managed Reduction in Nesting Habitat. International Wildlife Management Congress, Sapporo, Japan. July 2015
Lyons, D.E., J. Tennyson, A. Patterson, D.D. Roby, Y. Suzuki, and P. Loschl. 2015. CASPIAN TERN RESPONSE TO NESTING HABITAT REDUCTIONS AT A MANAGED COLONY SITE IN EASTERN WASHINGTON, USA. 42n Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Lyons, D.E., J. Tennyson, A. Patterson, D.D. Roby, Y. Suzuki, P.J. Loschl, and K. Collis. 2014. Caspian tern response to management at Goose Island, Potholes Reservoir, as indicated using satellite telemetry. Avian Predation Workshop, Walla Walla, WA, 3 December. (Invited) December 2014
Lyons, D.E., J. Tennyson, A. Patterson, D.D. Roby, Y. Suzuki, P.J. Loschl, and K. Collis. 2014. Caspian tern response to management at Goose Island, Potholes Reservoir, as indicated using satellite telemetry. 2014 Anadromous Fish Evaluation Program Annual Review, Portland, Oregon. December 2014
Lyons, D.E., D.D. Roby, Y. Suzuki, J.Y. Adkins, and K. Collis. 2014. The plight of fish-eating birds: cormorants and endangered salmonids in western North America. 26th International Ornithological Congress, Tokyo, Japan. August 2014
Lyons, D.E., D.D. Roby, K. Collis, T.J. Lawes, K.S. Bixler, and A. Patterson. 2012. Build it and they will come? Assessment of a mitigation habitat network for Caspian terns. 19th Annual Conference of The Wildlife Society, Portland, OR. October 2012
Lyons, D.E., D.D. Roby, A.F. Evans, L. Weitcamp, and T. Good. 2015. Challenges to quantifying the benefits to fisheries of cormorant management and population control. August 2015
Lyons, D.E., A.F. Evans, N.J. Hostetter, D.D. Roby, K. Collis, P.J. Loschl, K.S. Bixler, A. Peck-Richardson, B. Cramer, J. Zamon, and D. Kuligowski. 2013. Measuring impacts of cormorant predation on smolt survival in the Columbia River estuary: Bioenergetics, PIT tag recoveries, and potential benefits from cormorant management. Anadromous Fish Evaluation Program Annual Review, Walla Walla, Washington. December 2013
Lyons, D.E., A. Peck-Richardson, D.D. Roby, and J. Lerczak. 2015. Tracking sympatric diving seabirds: Synergistic identification of foraging habitat niches and mapping of physical oceanographic parameters. 2nd World Seabird Conference, Cape Town, South Africa. October 2015
Lyons, D.E., A. Peck-Richardson, D.D. Roby, and J. Lerczak. 2015. Mapping characteristics of the Columbia River mouth using diving seabirds fitted with archival GPS and sensor tags. Willamette Valley Bird Symposium, Corvallis, OR, 24 January. (Poster) January 2015
Lyons, D.E., A. Peck-Richardson, D.D. Roby, and J. Lerczak. 2014. Mapping physical characteristics of the Columbia River mouth using diving seabirds fitted with archival GPS and sensor tags. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Loschl, P.J., D.D. Roby, B. Cramer, K. Collis, and D.E. Lyons. 2016. Caspian Tern responses to non-lethal management in the Columbia Plateau Region, USA. 43rd Annual Meeting of the Pacific Seabird Group, Oahu, Hawaii. February 2016
Loschl, P.J., D.D. Roby, A. Turecek, M. Hawbecker, J. Tennyson, and D.E. Lyons. 2015. USE OF DIGITAL AERIAL IMAGERY AND ONLINE GIS TO ESTIMATE COLONY SIZE AND AREA FOR GROUND-NESTING SEABIRDS: BETTER TOOLS FOR MONITORING SEABIRD POPULATIONS. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Lawonn, M.J., D.D. Roby, J.F. Piatt, W.H. Pyle, and R.R. Corcoran. 2013. How the breeding ecology of Kittlitz’s Murrelet makes sense (sometimes): The benefits of high-quality forage and rapid chick growth on nest survival and adult fitness. 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Lawes, T.J., K.S. Bixler, D.D. Roby, D.E. Lyons, P.J. Loschl, and Y. Suzuki. 2017. Life in the big city - Caspian Terns in the Salish Sea Region. 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Lawes, T.J., G.H. Smith, D.D. Roby, D.E. Lyons, K.S. Bixler, and Y. Suzuki. 2015. IMPACTS OF DROUGHT ON CASPIAN TERN COLONY RESTORATION IN SEMI-ARID LANDSCAPES OF EASTERN OREGON AND NORTHERN CALIFORNIA. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Lawes, T.J., D.E. Lyons, D.D. Roby, J. Tennyson, and A.G. Patterson. 2016. Leg-loop harness as a long duration attachment method for telemetry tags on a plunge-diving seabird. 43rd Annual Meeting of the Pacific Seabird Group, Oahu, Hawaii. February 2016
Lawes, T.J., D.D. Roby, D.S. Battaglia, and M. Hawbecker. 2015. It pays to have a good data plan: Monitoring seabird colonies using solar powered camera systems with remote data access and real-time video streaming. Willamette Valley Bird Symposium, Corvallis, OR, 24 January. (Poster) January 2015
Lawes, T.J., D.D. Roby, D. Lyons, Y. Suzuki, K.S. Bixler, and A. Evans. 2014. So far, thanks for all the carp – Caspian Terns at Malheur National Wildlife Refuge, Oregon. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
LYONS, D.E., T.J. LAWES, Y. SUZUKI, P.J. LOSCHL, and D.D. ROBY. 2016. RESPONSE OF INDIVIDUAL CASPIAN TERNS TO NESTING HABITAT MANAGEMENT IN THE PACIFIC NORTHWEST. 50th Annual Meeting of the Oregon Chapter of The Wildlife Society, Seaside, Oregon. February 2016
Kameda, K.O., D.D. Roby, D.N. Carss, and L.R. Wires. 2015. Towards sustainable, knowledge-based cormorant management: combining learning and experiences from North America, Europe, and Japan. Vth International Wildlife Management Congress, Sapporo, Japan, 27 July. (Invited) July 2015
Horton, C., L. Adrean, K. Nelson, D.D. Roby, M. Betts, and J. Rivers. 2018. Anomalous ocean conditions coincide with a lack of nesting activity in Marbled Murrelets in Oregon. 45th Annual Meeting of the Pacific Seabird Group, La Paz, Baja California Sur, Mexico, 21-24 February. February 2018
Fan, Z.Y., S.H. Chen, D.D. Roby, S. Chan, D.E. Lyons, S. Collar, Y.W. Lu, and Q. Huang. 2014. Conservation of the critically endangered Chinese crested tern: Restoration of a lost breeding colony on the Jiushan Islands, China. 26th International Ornithological Conference, Tokyo, Japan. August 2014
Evans, A.F., Q. Payton, B. Cramer, P.J. Loschl, K. Collis, D.D. Roby, B. Caillouet, and K. Kelly. 2017. Avian predation rates: Impacts from managed and unmanaged colonies. Avian Predation Workshop, U.S. Army Corps of Engineers, The Dalles, Oregon. 2 March. March 2017
Evans, A.F., Q. Payton, B. Cramer, P.J. Loschl, K. Collis, D.D. Roby, B. Caillouet, and K. Kelly. 2016. Caspian tern predation rates on ESA-listed salmonids: Impacts from managed and un-managed colonies in the Columbia River basin, 2016. 2016 Anadromous Fish Evaluation Program Annual Review, Portland, Oregon. November 2016
Evans, A.F., D.D. Roby, K. Collis, N.J. Hostetter, B. Cramer, P. Loschl, D.E. Lyons, and T. Lawes. 2013. Impact of gull predation on smolt survival in the Columbia Plateau region: Understanding what on-colony PIT tag recoveries can tell us. Anadromous Fish Evaluation Program Annual Review, Walla Walla, WA. December 2013
Evans, A.F., D.D. Roby, K. Collis, B. Cramer, N.J. Hostetter, P.J. Loschl, D.E. Lyons, T.J. Lawes, and Q. Payton. 2014. Caspian tern predation on juvenile salmonids in the Columbia River Basin: A synopsis of PIT tag recovery methods, analyses, and results from 2014. Avian Predation Workshop, Walla Walla, WA, 3 December. (Invited) December 2014
Evans, A., Q. Payton, A. Turecek, D.D. Roby, K. Collis, B. Cramer, and P.J. Loschl. 2015. An assessment of avian predation on juvenile salmonids: A spatially-explicit analysis of smolt losses in relation to survival standards. 145th Annual Meeting of the American Fisheries Society, Portland, OR, 18 August. August 2015
Evans, A., Q. Payton, A. Turecek, B. Cramer, K. Collis, D. Roby, P.J. Loschl, L. Sullivan, J. Skalski, R. Townsend, M. Weiland, and C. Dotson. 2015. Avian predation on juvenile salmonids in the Columbia River: A spatial and temporal analysis of impacts in relation to fish survival. Anadromous Fish Evaluation Program Annual Review, Walla Walla, Washington. December 2015
Evans, A., D. Roby, K. Collis, B. Cramer, N. Hostetter, P. Loschl, D. Lyons, T. Lawes, and Q. Payton. 2014. Caspian tern predation on juvenile salmonids in the Columbia River basin: a synopsis of PIT tag recovery methods, analyses, and results from 2014. 2014 Anadromous Fish Evaluation Program Annual Review, Portland, Oregon. December 2014
Cushing, D.A., D.D. Roby, and D.B. Irons. 2015. Temporal change in a subarctic marine bird community that experienced simultaneous effects of a major oil spill and climate variability. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Cushing, D.A., D.D. Roby, and D.B. Irons. 2015. Patterns of change over 23 years in the marine bird community of Prince William Sound, Alaska. Willamette Valley Bird Symposium, Corvallis, OR, 24 January. January 2015
Cushing, D.A., D.D. Roby, K.J. Kuletz, and D.B. Irons. 2013. Decadal declines in abundance of Brachyramphus murrelets in Prince William Sound, Alaska. Marbled Murrelet Special Paper Session, 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Cushing, D.A., D.D. Roby, K.J. Kuletz, and D.B. Irons. 2013. Changes in abundance of Brachyramphus murrelets in Prince William Sound, Alaska, 1989-2012. Gulf of Alaska Plenary Session, Alaska Marine Science Symposium, Anchorage, AK. January 2013
Collis, K., D.D. Roby, P.J. Loschl, Y. Suzuki, K. Kelly, E. Schniedermeyer, A.F Evans, B. Cramer, A. Turecek, and Q. Payton. 2016. Inland Avian Predation Management Plan: Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids in the Columbia Plateau region, 2016. 2016 Anadromous Fish Evaluation Program Annual Review, Portland, Oregon. November 2016
Collis, K., D. Roby, P. Loschl, Y. Suzuki, A. Munes, J. Mulligan, E. Schniedermeyer, A. Evans, B. Cramer, A. Turecek, and Q. Payton. 2015. Inland Avian Predation Management Plan: Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids in the Columbia Plateau Region, 2015. Anadromous Fish Evaluation Program Annual Review, Walla Walla, Washington. December 2015
Collis, K., D. Roby, D. Lyons, C. Baird, T. Lawes, P. Loschl, Y. Suzuki, A. Piggott, A. Wilson, C. Congdon, A. Evans, B. Cramer, A. Turecek, and Q. Payton. Caspian Tern Management Plan for the Columbia River Estuary: Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids in the Columbia River estuary, 2015. Anadromous Fish Evaluation Program Annual Review, Walla Walla, Washington. December 2015
Collar, S., D.D. Roby, and D.E. Lyons. 2014. Top-down and bottom-up interactions influence reproductive success at a Caspian Tern super-colony. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Collar, S., D.D. Roby, D.E. Lyons, and O. Bailey. 2018. Top-down and bottom-up interactions influence fledging success at North America’s largest colony of Caspian Terns (Hydroprogne caspia ). 45th Annual Meeting of the Pacific Seabird Group, La Paz, Baja California Sur, Mexico, 21-24 February. February 2018
Chen. S., D.D. Roby, S. Chan, H.-W. Yuan, D.E. Lyons, Y. Suzuki, Z. Fan, Y. Lu, and C.-H. Hong. Approaches toward restoration of the critically endangered Chinese Crested Tern. 43rd Annual Meeting of the Pacific Seabird Group, Kahuku, Hawaii. February 2016
Chen, S., D.D. Roby, S. Chan, Z. Fan, Y. Lu, and D.E. Lyons. 2015. Conservation of the critically endangered Chinese Crested Tern: Status, problems, and future plans. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Chan, S., S. Chen, D.D. Roby, S.D. Collar, Q. Huang, and D.E. Lyons. 2014. Success in restoration of a breeding colony of the Chinese Crested Tern in the Jiushan Islands, Zhejiang Province, China. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Chan, S., S. Chen, D.D. Roby, D.E. Lyons, Y. Suzuki, and Y.T. Yu. 2016. Another successful year for restoration of the Chinese Crested Tern (Thalasseus bernsteini) colony on Tiedun Dao, Jiushan Islands, China (2015): report and future plans. 43rd Annual Meeting of the Pacific Seabird Group, Kahuku, Hawaii. February 2016
Chan, S., S. Chen, D.D. Roby, C. Chen, and P. Ding. 2015. OBSERVATIONS OF A RESTORED BREEDING COLONY OF CHINESE CRESTED TERNS IN THE JIUSHAN ISLANDS, ZHEJIANG PROVINCE, CHINA DURING THE 2014 BREEDING SEASON. 42nd Annual Meeting of the Pacific Seabird Group, San Jose, California. February 2015
Bixler, K.S., L.J. Adrean, D.E. Lyons, and D.D. Roby. 2014. Comparison of cormorant diets in two Oregon estuaries. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Bixler, K.S., D.E. Lyons, Y. Suzuki, and D.D. Roby. 2013. Impact of Bald Eagles on nesting Double-crested Cormorants at the large colony on East Sand Island in the Columbia River estuary. 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Bixler, K.S., D.E. Lyons, T.J. Lawes, P.J. Loschl, and D.D. Roby. 2016. Interspecific kleptoparasitism of Caspian Terns by gulls in interior Washington, Oregon, and California. 43rd Annual Meeting of the Pacific Seabird Group, Oahu, Hawaii. February 2016
Bixler, K.S., D.E. Lyons, P.J. Loschl, T.J. Lawes, and D.D. Roby. 2015. WHAT CAN PREY DELIVERY RATES TELL US ABOUT FOOD AVAILABILITY FOR CASPIAN TERNS? 42nd Annual Meeting of the Pacific Seabird Group. San Jose, California. February 2015
Bixler, K., D.E. Lyons, D.D. Roby, Y. Suzuki, M.K.D. McDowell, and T.J. Lawes. 2017. American White Pelicans for two colonies in Oregon: natal philopatry to coastal and interior regions? 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Banet, N., D.D. Roby, T.J. Lawes, K.S. Bixler, D.E. Lyons, A.F. Evans, and K. Collis. 2013. Evaluating the success of newly restored Caspian Tern breeding habitat in Malheur National Wildlife Refuge, Oregon. 40th Annual Meeting of the Pacific Seabird Group, Portland, OR. February 2013
Bailey, O.A., Y. Suzuki, D.D. Roby, D.E. Lyons, P.J. Loschl, T.J. Lawes, and K.S. Bixler. 2015. Site fidelity and inter-colony movements of known-age Caspian Terns. Willamette Valley Bird Symposium, Corvallis, OR, 24 January. (Poster) January 2015
Bailey, O.A., D.D. Roby, D.E. Lyons, Y. Suzuki, P.J. Loschl, and K.S. Bixler. 2017. Kid-friendly: Factors affecting breeding success of Caspian Terns on East Sand Island in the Columbia River estuary. 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Adrean, L.J., M. Pickett, B.Taggart, S.K. Nelson, D.D. Roby, and M.G. Betts. 2017. Testing whether unmanned aircraft systems can be used to locate cryptic nests of the Marbled Murrelet. 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Adrean, L., S.K. Nelson, C. Horton, D.D. Roby, M.G. Betts, and J. Rivers. 2018. Radio-tagging reveals unprecedented breeding season movements of Marbled Murrelets. 45th Annual Meeting of the Pacific Seabird Group, La Paz, Baja California Sur, Mexico, 21-24 February. February 2018
Technical Publications Publication Date
Trites, A.W., B. Battaile, K. Benoit-Bird, L. Cooper, J. Grebmeier, A. Harding, S. Heppell, D. Irons, C. Jay, S. Kitaysky, K. Kuletz, R. Paredes, H. Renner, and D. Roby. 2013. Patch dynamics study, NPRB BSIERP Projects B67 & B77, Final 16 Report to the North Pacific Research Board, Anchorage, AK. February 2013
Suzuki, Y., J. Heinrichs, D.E. Lyons, D.D. Roby, and N. Schumaker. 2018. Modeling the Pacific Flyway population of Caspian Terns to investigate current population dynamics and evaluate future management options; Phase 3: Model Results. Bonneville Power Administration and Northwest Power and Conservation Council, Portland, Oregon. 106 pp. | Download July 2018
Suryan, R.M., D.B. Irons, P.G.R. Jodice, D.D. Roby, and E.D. Brown. 2002. Bottom-up, top-down, and mismatch controls of reproduction in a colonial seabird: colony specific effects on seabird-forage fish relationships. Exxon Valdez Oil Spill Restoration Project Draft Final Report. (Restoration Project 01163E). US Fish & Wildlife Service, Anchorage, AK. January 2002
Schreck, C.B., D.D. Roby, S. Clements, and M. Karnowski. 2001. Juvenile salmonid survival in specific areas of the Nehalem watershed. Annual Report. Oregon Department of Fish and Wildlife. 63pp. October 2001
Roby, D.D., S.M. Murphy, R.J. Ritchie, M.D. Smith, A.G. Palmer, D.L. Nordmeyer-Elmore, E. Pruitt, and R.C. Kull, Jr. 2002. The effects of noise on birds of prey: A study of peregrine falcons (Falco peregrinus) in Alaska. AFRL-HE-WP-TR-2002-0190, U.S. Air Force Research Laboratory, Wright-Patterson AFB, Ohio. 252 pp. Published October 2002
Roby, D.D., P.G.R. Jodice and K.R. Turco. 2000. Diet Composition, Reproductive Energetics, and Productivity of Seabirds Damaged by the EXXON VALDEZ Oil Spill. Restoration Project Final Report to EXXON VALDEZ Oil Spill Trustee Council. October 2000
Roby, D.D., K. Collis, et al. 2018. Implementation and evaluation of efforts to reduce predation on ESA-listed salmonids by Caspain terns nesting at East Sand Island, Columbia River estuary. Final annual report to Bonneville Power Administration, Portland, Oregon. 59 pp. | Download May 2018
Roby, D.D., K. Collis, S.K. Nelson, K. Larson and K. Bixler. 2004. Caspian tern nesting ecology and diet in San Francisco Bay and Dungeness National Wildlife Refuge: 2004 final annual report. 52 p. (available through website: www.columbiabirdresearch.org) January 2004
Roby, D.D., K. Collis, P.J. Loschl, Y. Suzuki, D.E. Lyons, T.J. Lawes, K.S. Bixler, B. Caillouet, B. Underwood, A.F. Evans, B. Cramer, A. Turecek, Q. Payton, and M. Hawbecker. 2017. Avian predation on juvenile salmonids: evaluation of the Caspian Tern Management Plan in the Columbia River Estuary. 2016 Final Annual Report to the Bonneville Power Administration and the Northwest Power and Conservation Council, Portland, Oregon. 83 pp. March 2017
Roby, D.D., K. Collis, P.J. Loschl, J. Tennyson, Y. Suzuki, A. Munes, S. Toomey, A.F. Evans, B. Cramer, A. Turecek, Q. Payton. 2015. Implementation of the Inland Avian Predation Management Plan, 2014 Final Report. Submitted to the USACE-Walla Walla District, Walla Walla, WA. 95 pp. | Download July 2015
Roby, D.D., K. Collis, L. Adrean, D. Battaglia, D.E. Lyons, K. Nelson, A. Patterson, C. Spiegel, Y. Suzuki, C. Wolf, B. Cramer, A. Evans, M. Hawbecker, and J. Sheggeby. Caspian tern nesting ecology and diet in San Francisco Bay and interior Oregon. 2009 Draft Annual Report to the U.S. Army Corps of Engineers – Portland District, Portland, OR. 58 pp. September 2010
Roby, D.D., K. Collis, J.Y. Adkins, Y. Suzuki, B. Courtot, D.E. Lyons, A.M. Myers and C. Couch. 2005. Colony Size, Nesting Success, and Predation on Salmon Smolts by Caspian Terns and Double-Crested Cormorants in the Lower Columbia River. Pacific Seabirds 32: 52-53. October 2005
Roby, D.D., K. Collis, J.Y. Adkins, M. Correll, K. Courtot, B. Cramer, N. Nostetter, P. Loschl, D.E. Lyons, T. Marcella, Y. Suzuki, J. Tennyson, A. Evans, M. Hawbecker, J. Sheggeby, and S. Sebring. 2010. Research, monitoring, and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River. 2009 Annual Report to the US Army Corps of Engineers and the Bonneville Power Administration, Portland OR. 146p April 2010
Roby, D.D., K. Collis, J.Y. Adkins, C. Couch, B. Courtot, R. Lord, D.E. Lyons, Y. Suzuki, A. Evans, and M. Hawbecker. 2006. Research, Monitoring, and Evaluation of Avian Predation on Salmonid Smolts in the Lower and Mid-Columbia River. 2005 Season Summary submitted to the Bonneville Power Administration and the U.S. Army Corps of Engineers, Portland, OR. June 2006
Roby, D.D., K. Collis, J. Adkins, L. Adrean, D. Battaglia, B. Cramer, P. Loschl, T. Marcella, K. Nelson, D.E. Lyons, F. Mayer, Y. Suzuki, A. Evans, M. Hawbecker, and J. Sheggeby. 2009. Caspian tern nesting ecology and diet in San Francisco Bay and interior Oregon: 2008 annual report. Report submitted to the U.S. Army Corps of Engineers, Portland, OR. 62 pp. January 2009
Roby, D.D., K. Collis, D.E. Lyons, Y. Suzuki, P.J. Loschl, T.J. Lawes, K.S. Bixler, A. Piggott, A. Evans, B. Cramer, A Turecek, Q. Payton, and M. Hawbecker. 2016. Avian predation on juvenile salmonids: Evaluation of the Caspian Tern Management Plan in the Columbia River estuary. 2015 Annual Report to the Bonneville Power Administration, Portland, Oregon. 42 pp. April 2016
Roby, D.D., K. Collis, D.E. Lyons, Y. Suzuki, P.J. Loschl, T.J. Lawes, K.S. Bixler, A. Peck-Richardson, A. Piggott, O. Bailey, H. McKinnon, A. Laws, J. Mulligan, S. Toomey, A. Munes, E. Schniedermeyer, A. Wilson, G. Smith, K. Saunders, L. Hanwacker, C. Horton, A.F. Evans, B. Cramer, A. Turecek, Q. Payton, M. Hawbecker, and D. Kuligowski. 2015. Research, monitoring and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River, 2014 Final Annual Report. Submitted to Bonneville Power Administration, USACE-Portland District, and Grant County (WA) Public Utility District/Priest Rapids Coordinating Committee, Portland, OR and Wenatchee, WA. 312 pp. | Download July 2015
Roby, D.D., K. Collis, D.E. Lyons, Y. Suzuki, J.Y. Adkins, L. Reinalda, N. Hostetter, L. Adrean, A. Evans, and M. Hawbecker. 2008. Research, Monitoring, and Evaluation of Avian Prediation on Salmonid Smolts in the Lower and Mid-Columbia River. Draft Season Summary to the Bonneville Power Administration and the US Army Corps of Engineers, Portland OR. 148 pp. January 2008
Roby, D.D., K. Collis, D.E. Lyons, T.J. Lawes, Y. Suzuki, P.J. Loschl, K.S. Bixler, K. Kelly, E. Schniedermeyer, A.F. Evans, B. Cramer, J. Morella, A. Turecek, Q. Payton, and M. Hawbecker. 2017. Evaluation of foraging behavior, dispersal, and predation on ESAlisted salmonids by Caspian terns displaced from managed colonies in the Columbia Plateau region. 2016 Final Annual Report to the Grant County (WA) Public Utility District and the Priest Rapids Coordinating Committee, Ephrata, Washington. 123 pp. April 2017
Roby, D.D., K. Collis, D.E. Lyons, T. Lawes, Y. Suzuki, P. Loschl, K. Bixler, E. Hanwacker, J. Mulligan, A. Munes, E. Schniedermeyer, A. Evans, B. Cramer, A. Turecek, Q. Payton, M. Hawbecker. 2016. Evaluation of foraging behavior, dispersal, and predation on ESA-listed salmonids by Caspian terns displaced from managed colonies in the Columbia Plateau Region. 2015 Annual Report to the Grant County Public Utility District and the Priest Rapids Coordinating Committee, Wenatchee, WA. 121 pp. May 2016
Roby, D.D., K. Collis, D.E. Lyons, J.Y. Adkins, Y. Suzuki, P. Loschl, T. Lawes, K. Bixler, A. Peck-Richardson, A. Patterson, S. Collar, N. Banet, K. Dickson, G. Gasper, L. Kreiensieck, K. Atkins, L. Drizd, J. Tennyson, A. Mohoric, A. Evans, B. Cramer, M. Hawbecker, N. Hostetter, J. Zamon, and D. Kuligowski. 2013. Research, monitoring, and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River. Final 2012 Annual Report, Bonneville Power Administration and U.S. Army Corps of Engineers, Portland, OR. 239 pp. | Download September 2013
Roby, D.D., K. Collis, D.E. Lyons, J.Y. Adkins, Y. Suzuki, P. Loschl, T. Lawes, K. Bixler, A. Peck-Richardson, A. Patterson, S. Collar, A. Piggott, H. Davis, J. Mannas, A. Laws, J. Mulligan, K. Young, P. Kostka, N. Banet, E. Schniedermeyer, A. Wilson, A. Mohoric, A. Evans, B. Cramer, M. Hawbecker, N. Hostetter, A. Turecek, J. Zamon, and D. Kuligowski. 2014. Research, monitoring, and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River. Draft 2013 Annual Report to the U.S. Army Corps of Engineers and the Bonneville Power Administration, Portland, OR. 237 pp. (Available through internet: www.birdresearchnw.org) February 2014
Roby, D.D., K. Collis, D.E. Lyons, J.Y. Adkins, P. Loschl, Y. Suzuki, T. Marcella, L. Kerr, A. Evans, B. Cramer, N. Hostetter, B.P. Sandford, R.D. Ledgerwood, D.R. Kuligowski, and S. Sebring. 2011. Impacts of avian predation on salmonid smolts from the Columbia and Snake rivers, 2004-2009 Synthesis Report. U.S. Army Corps of Engineers – Walla Walla District, Walla Walla, Washington. 206 p. May 2011
Roby, D.D., K. Collis, D.E. Lyons, J.Y. Adkins, P. Loschl, Y. Suzuki, D. Battaglia, T. Marcella, T. Lawes, A. Peck-Richardson, L. Bayliss, L. Faulquier, D. Harvey, E. Tompkins, J. Tennyson, A. Evans, N. Hostetter, B. Cramer, M. Hawbecker, R.D. Ledgerwood, S. Sebring. 2011. Research, monitoring, and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River. 2010 Final Annual Report to Bonneville Power Administration and the U.S. Army Corps of Engineers, Portland, Oregon. 166 p. October 2011
Roby, D.D., K. Collis, D.E. Lyons, A. Evans, J.Y. Adkins, Y. Suzuki, P. Loschl, T. Lawes, K. Bixler, B. Cramer, A. Peck-Richardson, M. Hawbecker, N. Hostetter, E. Dykstra, J. Harms, W. Mashburn, J. Tennyson, N. Ventolini, R.D. Ledgerwood, and S. Sebring. 2012. Research, monitoring, and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River. Final 2011 Annual Report. Bonneville Power Administration and U.S. Army Corps of Engineers, Portland, OR. 171 pp. August 2012
Roby, D.D., K. Collis, A. Evans, S.K. Nelson, K. Bixler, and D. Lyons. 2005. Caspian Tern Nesting Ecology and Diet at Colony Sites on the Olympic Peninsula, WA. 2005 Annual Report to the US Fish & Wildlife Service, Migratory Birds and Habitat Programs, Portland, OR, USA. October 2005
Roby, D.D., K. Bixler, J.F. Piatt, K. Collis, A. Evans. 2006. Observations of Caspian terns at Dungeness National Wildlife Refuge and distribution of gull colonies in Puget Sound, Washington. 2006 Final Annual Report, U.S. Fish and Wildlife Service, Portland, Oregon. 17 pp. November 2006
Roby, D.D., J.Y. Adkins, K. Bixler, K. Collis, and A. Evans. 2007. Surveys for Nesting Glaucous-winged/Western Gulls and Caspian Terns in Puget Sound, Washington. Final Annual Report to the US Fish & Wildlife Service, Portland OR. 12 pp. October 2007
Roby, D.D. and A.K. Hovey. 2002. Pigeon Guillemot restoration research at the Alaska SeaLife Center. Exxon Valdez Oil Spill Restoration Project Draft Final Report (Restoration Project 01327). 79 pp. July 2002
Piggott, A.R., S.B. Stark, B.R. Higgins, B.P. Underwood, D.B. Irons, and D.D. Roby. 2017. Recovery monitoring of the pigeon guillemot population at the Naked Island Group in Prince William Sound, Alaska. Restoration Project 2016 Annual Report, U.S. Fish and Wildlife Service, Anchorage, Alaska. 31 pp. May 2017
Peterson, R.C., D.E. Lyons, D.D. Roby, and Y. Suzuki. 2016. Pacific Flyway Caspian Tern population monitoring in 2015. Annual Report to the U.S. Fish and Wildlife Service, Region 1, Portland, Oregon. 27 pp. February 2016
Orben, R.A., D.B. Irons, S.A. Shaffer, and D.D. Roby. 2012. Winter distribution and ecology of black-legged kittiwakes (Rissa tridactyla) and thick-billed murres (Uria lomvia) breeding at two Bering Sea colonies with differing population trends. NPRB Project 911 Final Report, North Pacific Research Board, Anchorage, AK. 88 pp. November 2012
Murphy, S.M., R.J. Ritchie, D.D. Roby, D.L. Nordmeyer, and A.G. Palmer. 2001. Responses of Peregrine Falcons to low-level jet aircraft. Invited paper presented at the Effects of Noise on Wildlife Conference, Goose Bay, Labrador. Institute for Environmental Research and Monitoring. Terra Borealis No. 2:34-35. Expanded Abstract. August 2001
Lyons, D.E., D.D. Roby, A.F. Evans, N.J. Hostetter, and K. Collis. 2011. Benefits to Columbia River anadromous salmonids from potential reductions in avian predation on the Columbia Plateau. Final Report to the U.S. Army Corps of Engineers, Walla Walla, WA. 78 pp. September 2011
Lyons, D.E., D.D. Roby, A.F. Evans, N.J. Hostetter, K. Collis, and S.H. Sebring. 2014. Benefits to Columbia River anadromous salmonids from potential reductions in predation by double-crested cormorants nesting at the East Sand Island colony. Final Report to the U.S. Army Corps of Engineers – Portland District. U.S. Army Corps of Engineers, Portland, OR. 50 pp. (Available through internet: www.birdresearchnw.org) February 2014
Lyons, D.E., D.D. Roby, A.F. Evans, N.J. Hostetter, K. Collis, and S.H. Sebring. 2011. Benefits to Columbia River anadromous salmonids from potential reductions in predation by double-crested cormorants nesting at the East Sand Island colony. Draft Report to the U.S. Army Corps of Engineers – Portland District. U.S. Army Corps of Engineers, Portland, OR. 50 pp. December 2011
Lyons, D.E., A.F. Evans, N.J. Hostetter, A. Piggot, L. Weitkamp, T.P. Good, D.D. Roby, K. Collis, P.J. Loschl. And B. Cramer. 2014. Factors influencing predation on juvenile salmonids by double-crested cormorants in the Columbia River estuary: A retrospective analysis. Report prepared for the U.S. Army Corps of Engineers – Portland District, Portland, OR. 30 pp. May 2014
Evans, A.F., Q. Payton, A. Turecek, B. Cramer, K. Collis, D.D. Roby, and P. Loschl. 2015. Avian predation on juvenile salmonids in the Columbia River: A spatial and temporal analysis of impacts in relation to fish survival. Draft Report for Public Utility District No. 2 of Grant County (WA), Priest Rapids Coordinating Committee, Bonneville Power Administration, and the U.S. Army Corps of Engineers – Walla Walla District, Ephrata, Washington. 47 pp. | Download June 2015
Evans, A., Q. Payton, B. Cramer, K. Collis, D. Hewitt, and D.D. Roby. 2015. Colonial waterbird predation on Lost River and shortnose suckers based on recoveries of passive integrated transponder tags. Draft Technical Report to Bureau of Reclamation, Klamath Basin Area Office, Klamath Falls, Oregon. 23 pp. | Download July 2015
Collis, K., M. Hawbecker, D.D. Roby, M. Thompson, C. Faustino, C. Cardoni, C.D. Anderson, and D.E. Lyons. 2001. Cormorant and brown pelican use of excluder-fitted pile dikes in the Colubmia River estuary. 2001 Final report to the U.S. ARmy Corps of Engineers, Portland District. 33 pp. October 2001
Collis, K., M. Hawbecker, D.D. Roby, C. Couch, J. Wolf, and C.D. Anderson. 2001. Pelican, cormorant, and pinniped use of pile dikes and jetties at the mouth of the Columbia River. Draft final report to the U.S. Army Corps of Engineers, Portland District. 39 pp. October 2001
Collis, K., D.D. Roby, P.J. Loschl, Y. Suzuki, K. Kelly, E. Schniedermeyer, A.F. Evans, B. Cramer, A Turecek, and Q. Payton. 2016. Implementation of the Inland Avian Predation Management Plan, 2016. Draft Annual Report to the U.S. Army Corps of Engineers-Walla Walla District and the U.S. Bureau of Reclamation, Walla Walla, WA. 104 pp. September 2016
Collis, K., D.D. Roby, P.J. Loschl, Y. Suzuki, A. Munes, J. Mulligan, E. Schniedermeyer, A.F. Evans, B. Cramer, A. Turecek, and Q. Payton. 2016. Implementation of the Inland Avian Predation Management Plan, 2015. Final Annual Report submitted to the U.S. Army Corps of Engineers – Walla Walla District and the U.S. Bureau of Reclamation, Walla Walla, Washington. 100 pp. March 2016
Collis, K., D.D. Roby, N.J. Hostetter, A.F. Evans, D.E. Lyons, J.Y. Adkins, Y. Suzuki, P. Loschl, and T. Lawes. 2013. Caspian tern colony site assessment: Management opportunities in western North America. Final Report to the U.S. Army Corps of Engineers – Walla Walla District, Walla Walla, WA. 102 pp. | Download April 2013
Collis, K., D.D. Roby, N.J. Hostetter, A.F. Evans, D.E. Lyons, J.Y. Adkins, Y. Suzuki, P. Loschl, and T. Lawes. 2012. Caspian tern colony site assessment: Management opportunities in western North America. Final Report to the U.S. Army Corps of Engineers – Walla Walla District, Walla Walla, WA. 102 pp. July 2012
Collis, K., D.D. Roby, D.E. Lyons, Y. Suzuki, J.Y. Adkins, L. Reinalda, N. Hostetter, L. Adrean, M. Bockes, P. Loschl, D. Battaglia, T. Marcella, B. Cramer, A. Evans, M. Hawbecker, M. Carper, J. Sheggeby, and S. Sebring. 2009. Research, monitoring, and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River: 2008 season summary. Annual report of research results to the Bonneville Power Administration, Portland, OR. 158 pp. January 2009
Collis, K., D.D. Roby, D.E. Lyons, Y. Suzuki, J.Y. Adkins, L. Reinalda, M. Bockes, P. Loschl, D. Battaglia, T. Marcella, B. Cramer, A. Evans, M. Hawbecker, M. Carper, J. Sheggeby, and S. Sebring. 2009. Evaluate the impacts of avian predation on salmonid smolts from the Columbia and Snake rivers: 2008 final season summary. Annual report of research results to the U.S. Army Corps of Engineers, Walla Walla, WA. 100 pp. January 2009
Collis, K., D.D. Roby, D.E. Lyons, Y. Suzuki, J.Y. Adkins, L. Reinalda, C. Hand, N. Hostetter, A. Evans, M. Hawbecker. 2007. Research, monitoring, and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River. 2006 Season Summary. Bonneville Power Administration and U.S. Army Corps of Engineers, Portland, Oregon. 57 pp. February 2007
Collis, K., D.D. Roby, D.E. Lyons, R.M. Suryan, M. Antolos, S.K. Anderson, A.M. Myers, and M. Hawbecker. 2001. Caspian tern research on the lower Columbia River: Final 2001 summary. (available through website: www.columbiabirdresearch.org October 2001
Collis, K., D.D. Roby, C. Couch, G. Dorsey, K. Fischer, D.E. Lyons, A.M. Myers, S.K. Nelson, J.Y. Adkins, A. Evans and M. Hawbecker. 2005. Piscivorous waterbird research on the Columbia River: 2004 season summary. 91 p. (available through website: www.columbiabirdresearch.org) January 2005
Collis, K., D.D. Roby, C. Baird, T. Lawes, A. Wilson, C. Congdon, and A.F. Evans. 2015. Monitoring and predator control at the Corps-constructed Caspian tern island in southeastern Oregon and northeastern California, 2015. Annual Report to the U.S. Army Corps of Engineers-Portland District, Portland, Oregon. 38 pp. November 2015
Adkins, J.Y., D.D. Roby, et al. 2010. A status assessment of the double-crested cormorant (Phalacrocorax auritus) in western North America: 1998-2009. Final Report to the US Army Corps of Engineers. Oregon Cooperative Fish and Wildlife Research Unit, Corvallis OR. 69p January 2010