Northern Prairie Wildlife Research Center
Body: Large duck, 2 1/2 - 3 pounds, 24-28 inches long. Chestnut chest, white belly, dark rump and white tail. Head brilliant green. White neck-ring. Bill greenish yellow. Feet dull to bright reddish orange. Wings: Grayish brown with bright blue speculum bordered on leading and trailing edges with distinct white bars. Voice: Low raspy rink. In flight: White tail and underwings contrast with dark chest and head.
Ranging from drab hen-like appearance to blotchy near-winter coloration. Bill, wings and feet same as in winter.
Body: Drab brown with whitish tail. Bill orange with black spots or blotches. Feet orangish. Wings: Similar to male but usually more buffy-edged coverts. White bar on leading edge of speculum extends over the tertial coverts. Voice: Loud resonant quack.