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Lesser scaup (Aythya affinis), Poole, A., and Gill, F., eds., Birds of North America

Austin, J. E., Custer, C. M., and Afton, A. D., 1998, Lesser scaup (Aythya affinis), Poole, A., and Gill, F., eds., Birds of North America: Washington, D.C., The American Ornithologist' Union.

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