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

Florida Staff Member


Dr. H. Percival

Dr. H.F. Percival

Unit Leader
Phone: (352) 846 - 0543
Email: percivaf@ufl.edu

Education

  • Ph D Clemson University 1972
  • MS Clemson University 1968
  • BS University of South Carolina 1966

Research Interest

Dr. Percival's research interests lie in wetland wildlife, and have conducted long term collaborative projects on various aspects of alligator and migratory bird biology. He has teamed with geomaticists and aeronautical engineers to develop an unmanned aerial vehicle for assessment of wildlife populations and habitats. he has a special interest in natural resources administration, especially multidisciplinary, collaborative, and interagency research programs.

Research Publications Publication Date
Zweig, C.L., M.A. Burgess, H.F. Percival and W.M. Kitchens. 2015. Use of unmanned aircraft systems to delineate fine-scale vegetation communities. Wetlands. 35(2): 303-309. | Abstract | Download February 2015
Zweig, C.L., K.G. Rice, F.J. Mazzotti, and H. Franklin Percival. Body Condition Factor Analysis for the American alligator (Alligator mississippiensis). Herpetological Review. 2014. 45(2) pg. 216-218 June 2014
Zale, A. V., C. L. Montague, and H. F. Percival. 1987. A synthesis of potential effects of coastal impoundments on the production of estuarine fish and shellfish and some management options. Proceedings of the Symposium on Waterfowl and Wetland Management in the Coastal Zone of the Atlantic Flyway. W. R. Whitman and W. H. Meredith, eds. Delaware Department of Natural Resources, Wilmington, DE, pp. 425-436. January 1987
Yosapong, T., A. R. Woodward, J. P. Ross, P. S. Kubilis, and H. F. Percival. 2006. Survival and growth of American alligator hatchlings after artificial incubation and repatriation. Journal of Herpetology. 40(4):415-423. September 2006
Woodward, A.R., H.F. Percival, R. Conrow, T.S. Gross, K.G. Rice, R.H. Rauschenberger. 2011 Lake Apopka's abnormal alligators in J. Elliott, C. Bishop, and C. Morrisey. Coeds. Wildlife Toxicology: Forensic Approaches. Springer, New York. pp 153-187 September 2011
Woodward, A. R., M. L. Jennings, and H. F. Percival. 1989. Egg collecting and hatch rates of American alligator eggs in Florida. Wildlife Society Bulletin, Vol. 17:124-130. January 1989
Woodward, A. R. H. F. Percival, M. L. Jennings, and C. T. Moore. 1993. Low clutch viability of American alligators on Lake Apopka. Florida Scientist 56:52-63. | Abstract | Download January 1993
Watts, A.C., L. N. Kobziar, and H. F. Percival. 2011. Unmanned aircraft systems for wildland fire monitoring and research. In K.M. Robertson, R.E Masters and K.E.M. Galley, eds. Proceedings of the 24th Tall Timbers Fire Ecology Conference: The Future of Fire: Public Awareness, Health, and Safety. Tall Timbers Research Station, Tallahassee, FL. pp 86-90. December 2010
Watts, A. C., W. S. Bowman, A. H. El-Rahman, A. Mohamed, B. E. Wilkinson, J. Perry, Y. O. Kaddoura, and K. Lee 2008. Unmanned Aircraft Systems (UASs) for ecological research and natural-resource monitoring. Ecological Restoration, 26:13-14. January 2008
Watts, A. C., J. H. Perry, S. E. Smith, M.A. Burgess, B.E. Wilkinson, Z. Szantoi, P.G. Ifju, H. F. Percival. 2010. Small unmanned aircraft systems for low-altitude aerial surveys. Journal of Wildlife Management, 74(7):1614-1619. | Download | Publisher Website September 2010
Waddle, J. H., K. G. Rice, F. J. Mazzotti, and H. F. Percival. 2008. Modeling the effect of toe clipping on treefrog survival: beyond the return rate. Journal of Herpetology 42:467-473. June 2008
Waddle, J. H., K. G. Rice and H. F. Percival. 2003. Using personal digital assistants for collection of wildlife data. Wildlife Society Bulletin, Vol. 31(1):306-308. September 2002
Waddle, A. R, J. M. Kinsella, J. P. Ross, E. Rojas-Flores, H. F. Percival, D. J. Forrester. 2009. Nematodes collected by gastric lavage from live American alligators, alligator mississippiensis, in Florida. Journal of Parasitology 95(5): 1237–1238. October 2009
Valentine-Darby, P.L., P.C. Darby, and H.F. Percival. 2012. Gender-based differences in Florida apple snail (Pomacea paludosa) movements. Malacologia 54(1):109-118. December 2012
Valentine-Darby, P. L., P. C. Darby, R. E. Bennetts, W. M. Kitchens, and H. F. Percival. 2008. The use of mark-recapture to estimate Florida apple snail (Pomacea paludosa Say) density in wetland habitats. Florida Scientist. 71(2): 115-127. August 2007
Temsiripong, Y., J. P. Ross, A. R. Woodward, P. S. Kubilis, and H. F. Percival. Submitted. Survival and growth of American alligator (Alligator mississippiensis) hatchlings after artificial incubation and repatriation. Journal of Herpetology, 40(4): 415-423. September 2006
Stolen, E.D., J.A. Collazo, H.F. Percival. 2012. Group foraging effects on capture rate in wading birds. Condor. IP-032594 | Abstract October 2012
Stolen, E. D., J. A. Collazo, and H. Franklin Percival. 2009. Vegetation Effects on Fish Distribution in Impounded Salt Marshes. Southeastern Naturalist 8:503-814. August 2009
Stolen, E. D., J. A. Collazo, and H. F. Percival. 2007. Scale-dependent habitat selection of nesting Great Egrets and Snowy Egrets. Waterbirds 30:384-393. October 2007
Stewart, R. E., G. L. Krapu, , B. Conant, D. L. Hall, and H. F. Percival. 1988. Workshop Summary: habitat loss and its effect on waterfowl. In: Waterfowl in Winter, University of Minnesota Press, Minneapolis, MN, W. Weller, ed., pp. 613-617. January 1988
Stevens, A. J., Z. C. Welch, P. C. Darby and H. F. Percival. 2002. Temperature effects on Florida applesnail activity: implications for snail kite foraging success and distribution. Wildlife Society Bulletin, Vol. 30(1):75-81. March 2002
Smith, S., Z. Szantoi, J. Perry, and H.F. Percival. 2011. Design considerations for remote sensing payloads on inexpensive small unmanned autonomous vehicles. Surveying and Land Information Sciences Journal. | Download October 2010
Singh, TC Hines, HF Percival, MK Oli. Published. Does nest-site selection influence bobwhite nesting success in South Florida? Wildlife Research.37:489–496. October 2010
Singh, A., T.C. Hines, J.A. Hostetler, H. F. Percival, and M.K. Oli, 2011. Patterns of space and habitat use by northern bobwhites in South Florida, USA. Eur J Wildl Res (2011) 57:15–26 | Download January 2011
Schwarzer, A. C., Jaime A. Collazo, Lawrence J. Niles, Janell M. Brush, Nancy J. Douglass, and H. Franklin Percival. 2012. Annual Survival and Plasma Metabolites of Red Knots (Calidris canutus rufa) wintering in Florida. Auk 129:725-733. | Download October 2012
Schmid, J. R., A. B. Bolten, K. A. Bjorndal, W. J. Lindberg, H. F. Percival and P. D. Zwick. In Press. Home range and habitat use by Kemp's ridley turtles in west-central Florida. Journal of Wildlife Management, Vol. 67(1):196-206. January 2003
Rolland, V.M.O., H.F. Percival, T. Hines, M. Hostetler. Factors influencing reproductive performance of northern bobwhite in south Florida.European Journal of Wildlife Research. DOI 10.1007/s10344-010-0479-5.2010. | Download December 2010
Rolland, V., J.A. Hostetler, T.C. Hines, F.A. Johnson, H.F. Percival, and M.K. Oli. 2011. Effects of harvest and climate on population dynamics of northern bobwhites in south Florida. Wildlife Research. 38(5):396-407. October 2011
Rolland, V., J. Hostetler, T. Hines, H. F. Percival, and M. Oli. 2010. Impact of harvest on survival of a heavily hunted game bird population. Journal of Applied Ecology. Published Wildlife Research, 37, 392–400 August 2010
Rice, K. G., Waddle, J. H., Crockett, M. E., Bugbee, C. D., Jeffery, B. M., and Percival, H. F., 2007, Herpetofaunal inventories of the national park of south Florida and the Caribbean: Volume IV. Biscayne National Park: U. S. Geological Survey Open-File Report 2007-1057, Fort Lauderdale, Florida. January 2007
Rice, K. G., J. H. Waddle, M. E. Crockett, R. R. Carthy, and H. F. Percival. 2005. Herpetofaunal inventories of the National Parks of South Florida and the Caribbean: Volume III. Big Cypress National Preserve. US Geological Survey, Open File Report 2005-1300, Fort Lauderdale, Florida. March 2006
Rice, K. G., H. F. Percival and A. R. Woodward. 2002. Estimating sighting proportions of American alligator nests during helicopter survey. 2000 Proceedings of the Annual Conference of the Southeast Association of Fish and Wildlife Agencies, Vol. 54:314-321. February 2002
Rice, A. N., G. P. Ross, A. R. Woodward, D. A. Carbonneau, and H. F. Percival. 2007. Alligator diet in relation to alligator mortality on Lake Griffin, FL. Southeastern Naturalist 6(1):97-110. April 2007
Rice KG, JH Waddle, MW Miller, ME Crockett, FJ Mazzotti, and HF Percival. 2011. Recovery of Native Treefrogs After Removal of Nonindigenous Cuban Treefrogs, Osteopilus Septentrionalis. Herpetelogica. 67(2): 105-117. May 2011
R. McCleery, Zweig, C.L., M.A. DeSa, H.F. Percival, and W.M. Kitchens. In review. A novel trapping method for small mammals. Wildlife Society Bulletin. December 2014
Percival, H. F., T. C. Hines, and A. R. Woodward. 1990. Value-added conservation in crocodilians: the Florida model. Proceedings of the 4th Annual Meeting of the Society for Conservation Biology, p. 30. January 1990
Percival, H. F., C. L. Montague, and A. V. Zale. 1987. A summary of positive and negative aspects of coastal wetland impoundments as habitat for waterfowl. In: Waterfowl and Wetlands Symposium, W. R. Whitman, ed. Delaware Department of Natural Resources, Wilmington, DE, pp. 224-232. January 1987
Percival, H. F. 1987. Coastal impoundments for waterfowl management. In: W. K. Seitz, ed. Waterfowl Management and Research Update. USDI FWS Reasearch and Development, Washington, DC, pp. 319-335. January 1987
O'Shea, T. J., B. B. Ackerman, and H. F. Percival. 1995. Population biology of the Florida manatee. Information and Technology Report 1:1-5. January 1995
Nichols, J. D., H. F. Percival, R. A. Coon , M. J. Conroy, G. L. Hensler, and J. E. Hines. 1984. Observer visitation frequency and success of mourning dove nests: a field experiment. Auk, Vol. 101(2):398-402. January 1984
Mulholland, R., and H. F. Percival. 1982. Food habits of the common moorhen and purple gallinule in North-Central Florida. Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies, Vol. 36:527-536. January 1982
Morea, C. R., K. G. Rice, H. F. Percival, and S. R. Howarter. 2000. Home range and daily movement of the American alligator in the Everglades. Proceedings of the 15th Working Meeting of the Crocodile Specialist Group, IUCN, Gland, Switzerland, pp. 485-504. September 2001
Montague, C. L., A. V. Zale, and H. F. Percival. 1987. The nature of export from fringing marshes, with reference to the production of estuarine animals and the effect of impoundments. Waterfowl & Wetlands Symposium. Proceedings of a symposium on waterfowl and wetlands management in the coastal zone of the Atlantic Flyway. W. R. Whitman and W. H. Meredith, eds. Delaware Department of Natural Resources, Wilmington, DE, pp. 437-450. January 1987
Montague, C. L., A. V. Zale, and H. F. Percival. 1987. Ecological effects of coastal marsh impoundment: A review. Environmenal Management, Vol. 11(6):743-756. March 1987
Maskey, T. M., H. F. Percival, and C. L. Abercrombie. 1995. Gharial habitat use in Nepal. Journal of Herpetology, Vol. 29(3):463-464. January 1995
Martin, J., H.H. Edwards, M.A. Burgess, H.F. Percival, D.E. Fagan, B.E. Grdner, J.G. Ortega-Ortiz, P.G. Ifju, B.S. Evers, and T.J. Rambo. 2012. Estimating distribution of hidden objects with drones: from tennis balls to manatees. PLos ONE 7(6): e38882. doi:10.1371/journal.pone.003882. 2012. June 2012
Lamont, M. M., H. F. Percival, and S. V. Colwell. 2002. Influence of vehicle tracks on loggerhead hatchling seaward movement along a northwest Florida beach. Florida Field Naturalist, Vol. 30(3):77-109. January 2002
Krementz, D. G., M. Conroy, J. Hines, and H. F. Percival. 1988. The effects of hunting on survival rates of American black ducks. Journal of Wildlife Management, Vol. 52(2):214-226. January 1988
Klein, J. L., S. R. Humphrey, and H. F. Percival. 1995. Effects of ecotourism on distribution of waterbirds in a wildlife refuge. Conservation Biology, Vol. 9(6):1454-1465. January 1995
Jones, G. P., L. G. Pearlstine, and H. F. Percival. 2006. An assessment of small unmanned aerial vehicls in wildlife research. Wildl. Soc. Bull. 34(3):750-758 October 2006
Jeske, C. W., H. F. Percival and J. E. Thul. 1993. Food habits of ring-necked ducks wintering in Florida. Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies. January 1993
Jennings, M. L., H. F. Percival, and A. R. Woodward. 1988. Evaluation of alligator hatchling and egg removal from three Florida lakes. Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies, pp. 283-294. January 1988
Jennings, M. L., H. F. Percival, and A. R. Woodward. 1987. Habitat variables affecting nesting success of the American alligator. Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies, pp. 334-294. January 1987
Jacobson, S. K., J. K. Morris, J. S. Sanders, E. N. Wiley, M. B. Brooks, R. E. Bennetts, H. F. Percival and S. Marynowski. 2006. Understanding, measuring, and overcoming barriers to the implementation of an adaptive land management program. Conservation Biology. 20(5):1516-1527. October 2006
Howarter, S. R., K. G. Rice, H. F. Percival, K. M. Portier, and C. R. Morea. 2000. Thermal ecology of the American alligator in the Everglades. Proceedings of the 15th Working Meeting of the Crocodile Specialist Group, IUCN, Gland, Switzerland, pp. 470-485. September 2001
Hotaling, A., H. F. Percival, W. M. Kitchens, J. W. Kasbohm. 2010. The persistence of the endangered Florida salt marsh vole in the salt marshes of the Central Florida gulf coast. Southeastern Naturalist 9(4):795-802. December 2010
Honeyfield, D. A., J. P. Ross, D. A. Carbonneau, S. P. Terrell, A. R. Woodward, T. R. Schoeb, H. F. Percival, J. P. Hinterkopf. 2008. Pathology, physiological parameters, tissue contaminants, and tissue thiamine in morbid and healthy adult American alligators (Alligator mississipiensis) on Lake Griffin, FL. Journal of Wildlife Diseases, 44(2): 280-294. November 2007
Hines, T. C., and H. F. Percival. 1987. Alligator management and value-added conservation in Florida. In: Valuing Wildlife: Economic and social perspectives, D. J. Decker and G. R. Goff, eds. . The Wildlife Society. Westview Press, Boulder, CO, pp. 164-173. January 1987
Hines, T. C., C. L. Abercrombie, H. F. Percival, and A. W. Woodward. 1984. Florida alligator: economics, harvest, and conservation. Proceedings of the 7th Working Meeting, IUCN Crocodile Specialist Group, Caracas, Venezuela, October 1984, S. F. Grozula, Ed. Fudena-IUCN Publ., Gland, Switzerland, pp. 132-142. January 1984
Heinz, G. H., H. F. Percival, and M. L. Jennings. 1989. Contaminants in American alligator eggs from Lake Apopka, Lake Griffin, and Lake Okeechobee, Florida. Environmental Monitoring and Assessment, Vol. 16:277-285. September 1989
Hardesty, J. L., R. J. Smith, C. J. Petrick, B. W. Hagedorn, and H. F. Percival. 1995. Status and distribution of the fourth largets population of red-cockaded woodpeckers: Preliminary results from Eglin Air Force Base, Florida Red-Cockaded Woodpecker Recovery, Ecological and Management (D. L. Kulhavy, R. G. Hooper, and R. Costa, eds. ). Center for Applied Studies in Forestry, College of Forestry, Stephen F. Austin University, Nacogdoches, TX, pp. 494-502. January 1995
Guillette, L. J., T. S. Gross, D. A. Gross, A. A. Rooney, and H. F. Percival. 1995. Gonadal steroidogenesis in-vitro from juvenile alligators obtained from contaminanted or control lakes. Environmental Health Perspectives, pp. 31-36. January 1995
Guillette, L. J., D. B. Pickford, D. A. Crain, A. A. Rooney, and H. F. Percival. 1996. Reduction in penis size and plasma testosterone concentrations in juvenile alligators living in a contaminanted environment. General and Comparative Endocrinology, Vol. 101(5):32-42. January 1996
Guillette, L. J. Jr., A. R. Woodward, D. A. Crain, D. B. Pickford, A. R. Rooney, and H. F. Percival. 1999. Plasma steroid concentrations and male phallus size in juvenile alligators from seven Florida lakes. General and Comparative Endocrinology, Vol. 116:356-372. January 2000
Gross, T. S., R. Roberts, J. Montes de Oca and H. F. Percival. 1997. Sex reversal in fresh waterturtles as a response to estrogenic environmental contaminants. Biotechnologies for the Ecological, Evolutionary and Conservation Sciences (BEECS), Reproductive Analysis Laboratory, Interdisciplinary Center for Biotechnology (ICBR), Department of Wildlife Ecology and Conservation, Florida Cooperative Fish and Wildlife Research Unit, University of Florida, Gainesville, FL, 26 pp. February 1997
Gross, T. S., L. J. Guillette, H. F. Percival, G. R. Masson, J. H. Matter, and A. R. Woodward. 1994. Contaminant induced reproductive anomalies in Florida. Comparative Pathology Bulletin, Vol. 26(4), 8 pp. January 1994
Gray, P. N., and H. F. Percival. 1991. A comparison of changes in body composition during the annual cycle between one non-migratory and two migratory members of the mallard complex. Bulletin of Ecological Society of America, Vol. 72:127. January 1991
Glorioso, BM, J. Waddle, M. Crockett, K. Rice, and H. Percival. 2012. Diet of the Invasive Cuban treefrog (Osteopilus septentrionalis) in Pine Rockland and Mangrove Habitats in South Florida. Caribbean Journal of Science.46:2-3:346-355. August 2012
Geissler, P. H., D. D. Dolton, R. Field, R. A. Coon, H. F. Percival, D. W. Hayne, L. D. Soileau, and R. R. George. 1987. Mourning dove nesting: seasonal patterns and effects of September hunting. U. S. Department of the Interior Resource Publication168:33. January 1987
Garmestani, A. S., and H. F. Percival. 2005. Raccoon removal reduces sea turtle nest depredation in the Ten Thousand Islands of Florida. Southeastern Naturalist 4(3):469-472. (Submitted May 2004) (Published July 2005) July 2005
Garmestani, A. S., and H. F. Percival. 2005. Control of the Ten Thousand Islands raccoon Procyon lotor marinus (L. ) reduces sea turtle nest depredation in the Ten Thousand Islands of Florida. Southeastern Naturalist 4(3):469-472 October 2006
Garmestani, A. S., H. F. Percival, and K. M. Portier. 2001. Preliminary evaluation of helicopter survey as a method of assessing sea turtle nesting distribution in the Ten Thousands Islands of Florida. Marine Turtle Newsletter No. 93:1-5. September 2001
Garmestani, A. S., H. F. Percival, K. M. Portier, and K. G. Rice. 2000. Nest-site selection by the loggerhead sea turtle in Florida's Ten Thousand Islands. Journal of Herpetology, Vol. 34(4):504-510. January 2000
Fujisaki, I., K. G. Rice, A. R. Woodward, H. F. Percival. 2007. Possible generational effects of habitat degradation on alligator reproduction. Journal of Wildlife Management. 71(7):2284-2289 September 2007
Enge, K. M., H. F. Percival, K. G. Rice, M. L. Jennings, G. R. Masson, and A. R. Woodward. 2000. Summer nesting of turtles in alligator nests in Florida. Journal of Herpetology, Vol. 34(4):497-503. January 2000
Elston, LM, JH Waddle, KG Rice, and HF Percival. 2013 Co-ocurrence of Invasive Cuban treefrogs and native treefrogs in PVC pipe refugia. Herpetological Review. 024733 August 2013
Dimmick, Ralph W., Madan Oli, Jeff Hostetler, Tommy Hines, Steve Brinkley, H. Franklin Percival. 2009. Hunting pressure, harvest rates, mortality, and survival of northern bobwhites in south Florida. Pages A1-xx in Cederbaum, SB, BC Faircloth, TM Terhume, JJ Thompson, JP Carroll, eds. Gamebird 2006: Quail VI and Perdix XII. University of Georgia. Athens, GA, USA July 2009
DeSa, M., C.L. Zweig, H.F. Percival, W.M. Kitchens, J. Hayes, J.W. Kasbohm. 2012. Comparison of Small Mammal Capture Techniques in Tidal Salt Marshes of the Central Gulf Coast of Florida. Southeastern Naturalist.11(1)89-100. January 2012
Darby, Philip C., Robert E. Bennetts, Steven J. Miller and H. Franklin Percival. 2002. Movements of Florida apple snails in relations to water levels and drying events. Wetlands, Vol. 22(3):489-498. October 2002
Darby, Philip C., P. L. Valentine-Darby, H. F. Percival, and W. M. Kitchens. 2001. Collecting Florida apple snails (Pomacea paludosa) from wetland habitats using funnel traps. Wetlands 21(2):308-311. September 2001
Darby, P. C., R. E. Bennetts, and H. F. Percival. 2008. Dry down impacts on apple snail (Pomacea pauludosa) demography: implications for wetland water management. Wetlands 28(1):204-214. March 2008
Darby, P. C., P. L. Valentine-Darby, and H. F. Percival and W. M. Kitchens. 2004. Florida apple snail (Pomacea paludosa Say) responses to lake habitat restoration activity. Arch. Hydrobiol. 161(4):561-575. (Submitted October 2003) (Published December 2004) December 2004
Darby, P. C., P. L. Valentine-Darby, R. e. Bennetts, J. D. Croop, H. F. Percival and W. M. Kitchens. 1997. Ecological studies of apple snails (Pomacea paludosa, SAY). Prepared under joint contract with the South Florida Water Management District and the St. Johns Water Management District, pp. 1-152. January 1997
Darby, P. C., P. L. Valentine-Darby and H. F. Percival. In Press. Dry season survival in a Florida apple snail (Pomacea paludosa SAY) population. Malacologia, Vol. 45:179-184. August 2002
Crain, D. A., L. J. Guilette, Jr., D. B. Pickford, H. F. Percival and A. R. Woodward. 1998. Sex steroid and thyroid hormone concentrations in juvenile alligators (Alligator mississippiensis) from contaminated and reference lakes in Florida, USA. Environmental Toxicology and Chemistry, Vol. 17(3):446-452. January 1998
Coon, R. A., J. D. Nichols, and H. F. Percival. 1981. Importance of structural stability to success of mourning dove nests. Auk, Vol. 90(2):389-391. January 1981
Chopp, M., H. F. Percival, and K. G. Rice. 2002. Everglades alligator production differences between marsh interior and marsh canal habitats. 16th Working Meeting of the Crocodile Specialist Group SSC/IUCN, Gainesville, FL. October 7-10, 2002. December 2002
Bohall-Wood, P., J. H. White, A. Steffer, C. F. Facemire, and H. F. Percival. 1996. Mercury concentrations in tissues of Florida bald eagles. Journal of Wildlife Management, Vol. 60:178-185. January 1996
Bock, J. L., A. R. Woodward, S. B. Linda, H. F. Percival, and D. A. Carbonneau. 2005. Hatching success of American alligator (Alligator mississippiensis) eggs when subjected to simulated collection trauma. Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies 58:323-335. October 2004
Allen, C. R., K. G. Rice, D. P. Wojcik, and H. F. Percival. 1997. Effect of red imported fire ant envenomization on neonatal alligators. Journal of Herpetology, Vol. 31(2):318-321. January 1997
Abercrombie, C. L., S. Howarter, C. Morea, K. Rice, and H. F. Percival. Everglades alligator thermoregulations: unanswered questions. Proceedings of the 16th Working Meeting of the Crocodile specialist Group SSC/IUCN, Gainesville, FL October 17, 2002. December 2002
Presentations Presentation Date
Percival, H.F. Lunch with a scientist. Invited seminar. National Science Writers Association annual meeting. Gainesville FL Nov 4, 2013 November 2013
Percival et al. 2013. An Unmanned Aircraft System for Ecological Research and Monitoring. Invited Seminar. University of Central Florida seminar series. Feb 11, 2013 February 2013
Burgess, M. A., Zweig, C. L., Newman, S., Cook, M. I., Rodgers, H. L., Carthy, R. R., Wilkinson, B. E., Whitley, T. J., Ward, T. S., DiRodio, J. G., Frederick, P. C., Ifju, P. G., Smith, S. E., Percival, H. F. (2015, April). Applications of high-resolution aerial imagery and a small unmanned aircraft system in everglades science. Presented at the 2015 Greater Everglades Ecosystem Restoration (GEER) conference, Coral Springs, Fl. April 2015
Technical Publications Publication Date
Peter C. Frederick, A. C. Watts, H. F. Percival. An Assessment of the Use of Unmanned Aircraft Systems for Surveys of Wading Birds in the Everglades. Final Report for the South Florida Water Management District, 2008. January 2008
Greg Masson, F. Percival, K. Rice, A. Woodward. Variation in Clutch Viability Among Seven Alligator Populations in Florida. Progress report, 1992. April 1992
Brush, J. and A. C. Watts. An assessment of autonomous unmanned aircraft systems (UAS) for avian surveys. Final Report, Wildlife Research Section, Fish and Wildlife Research Institute, Florida Fish and Wildlife Conservation Commission, 2008. January 2008