Upper Midwest Environmental Sciences Center
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.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/documents/publications/1998/austin_a_1998.html
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January 29, 2016
