- Medium-sized duck.
- Male with white crown.
- Green face patch.
- Large white patch in wings.
- Black rear end bordered by white.
Male DescriptionBreeding (Alternate) Plumage: White or cream-colored forehead and forecrown and broad dark-green patch extending from behind eye to nape. Bill is bluish-gray with black tip. Cheeks and chin grayish. Breast, sides, and back are pinkish-brown. Rear flanks show a white patch; undertail coverts are black.
Eclipse (Basic) Plumage: Variable amounts of white and green on head. Undertail coverts are variably black, with some white. In all plumages, male shows white patch on upper wing, and dark-green speculum.
Female DescriptionHead appears grayish overall, with finely-blended white and dusky streaks. Breast and flanks are pale reddish-brown; mantle is grayish-brown with some buff barring. Bill is small and grayish, with a black tip.
Immature DescriptionSimilar to adult female.