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Habitat Use and Productivity of Canvasbacks in Southwestern Manitoba, 1961-72

Jerome H. Stoudt

出版	U.S. Department of the Interior, Fish and Wildlife Service, 1982
URL	http://books.google.com.hk/books?id=5HUiAQAAIAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

A study of canvasback (Aythya valisineria) breeding populations, nest success, productivity, and habitat requirements was conducted from 1961 to 1972 on a 181.3 square kilometer area south of Minnedosa, Manitoba.