Canvasback Aythya valisineria

Identification Tips:

Adult male alternate:

Adult male basic:

Adult female:

Similar species:

Adult male Redhead is similar in alternate plumage to adult male Canvasback, but has yellow eye, blue bill with black tip, much grayer back and different profile. Female-plumage Redheads also have blue-gray bill with black tip, brownish body plumage without contrast between the head and body and a different profile.

Length and wingspan from: Robbins, C.S., Bruun, B., Zim, H.S., (1966). Birds of North America. New York: Western Publishing Company, Inc.