Description
American Black Ducks weigh 720–1,640 g (1.6–3.6 lb), measure 48–63 cm (19–25 in) in length and 88–96 cm (35–38 in) across the wings. They are similar to Mallards in size, and resemble the female Mallard in coloration, although the Black Duck's plumage is darker. The male and female Black Duck are generally similar in appearance, but the male's bill is yellow while the female's is a dull green. The head is slightly lighter brown than the dark brown body, and the speculum are iridescent violet-blue with predominantly black margins. The Black Duck has orange legs and dark eyes. In flight, the white underwings can be seen in contrast to the dark brown body. The behaviour and voice are the same as for the Mallard drake.
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