Bufflehead Bucephala albeola

Identification Tips:

Adult male alternate:

Adult male basic:

Adult female:

Similar species:

Female Bufflehead distinguished from female Harlequin Duck by white secondaries and single white patch behind the eye.

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