Female and juvenile Redheads are brownish-gray overall, with gray legs, black eyes and a gray bill with a black tip. Males in breeding plumage have a gray body, black rump and breast, and a bright rufous head with a yellow eye and a light blue bill with a black tip. The male in non-breeding plumage from July to September is overall dark brown, but still has a dull reddish head. Redheads are a little smaller than the similar looking Canvasbacks, with a rounder head, a lighter back, and a more typically duck-shaped bill. Redheads nest on marshy freshwater lakes, ponds, slow moving rivers and other wetlands in prairie zones.
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There are about 23 known species of diving ducks in North America, Aythya americana being one of them. Diving ducks tend to have sturdy stout bodies and short necks. They have legs placed far back on the bodies to help push them underwater Reiger Almost the only visual aspect that the genders have in common is the pale blue bill. The ducks can weigh anywhere from g, with males being slightly heavier than females.
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A combination of rusty red head, yellow eyes, and rounded head shape help distinguish males of this species from other male diving ducks. Uniformly brown females are less patterned than other female diving ducks. In flight, pale gray trailing edge of wing contrasts with darker leading edge. Male: Rufous head with yellow eye. Bill has black tip, a weak white subterminal band, and pale bluish base.
This large diving duck gets its name from the male's chestnut-red head, which looks similar to that of the canvasback. Unlike the canvasback, however, the male redhead has a high, up-and-downish forehead. His feet are bluish gray, and his eyes are orange-yellow.