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Reitsma, L., M. Goodnow, M.T. Hallworth, and C. J. Conway. 2010. Canada Warbler (Cardellina canadensis), The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America Online: http://bna.birds.cornell.edu/bna/species/421. doi:10.2173/bna.421
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