Northern Prairie Wildlife Research Center
Body: Medium-sized duck, up to 1 1/2 pounds, 15-18 inches long. Dark iridescence showing white flecking on cinnamon chest. Sides vermiculated tan. Belly white. Head-crest with distinct white stripes. Eyes red. Short multicolored bill. Feet dull gold. Wings: Coverts and speculum iridescent green, purple and blue. White bar on trailing edge of speculum. Silver-edged primaries. Voice: Plaintive squeal In Flight: Large head held high. White belly. Large square tail evident.
Ranging from blotchy dull coloration to near-winter plumage. Belly, throat and chin whitish. Eyes, feet, bill and wings same as in winter.
Body: Drab brown. Belly white. Back showing iridescent bronze. Chest and sides with white flecking. Head with crest and distinct comet-shaped white eye-ring. Bill dusky black with traces of orange. Feet dull gold. Wings: Similar to male but speculum with teardrop-shaped white trailing edge. Voice: Variety of whistles.