Upper Midwest Environmental Sciences Center
Lesser Scaup Aythya affinis, in Kear, J., ed., Ducks, geese and swans, Bird Families of the World
Austin, J. E., Custer, C. M., and Afton, A. D., 2005, Lesser Scaup Aythya affinis, in Kear, J., ed., Ducks, geese and swans, Bird Families of the World: New York, Oxford University Press, p. 679-685.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/documents/publications/2005/austin_a_2005.html
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January 29, 2016
