The Red-breasted Merganser may be the fastest duck in level flight, recorded at over 100 mph. Males have a shaggy double crest, white neck ring, and rusty breast. It winters on both coasts and the Great Lakes, often chasing fish in cooperative groups. Unlike the Common Merganser, it also nests in coastal salt marshes.
Habitat
Coastal bays and large lakes in winter; boreal rivers and coasts when breeding
Diet
Fish chased underwater at high speed
How common
Common
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