Red-breasted merganser Mergus serrator

Identification Tips:

Adult male:

Adult female:

Similar species:

Adult male in alternate plumage is similar to male Common Merganser but has reddish breast and gray flanks. Female, immature and eclipse male distinguished from similarly-plumaged Common Mergansers by lack of sharply-defined chin and lack of sharp contrast between reddish head and white breast, and by darker gray plumage, spikier crest, and slimmer bill. In winter, Red-breasted Mergansers are more likely to be found in saltwater habitats than are Common Mergansers.

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