1. Male-summer plumage - June 6, 2004 - Bear River MBR, Box
2. Male-summer plumage - June 6, 2004 - Bear River MBR, Box Elder
3. Male-winter plumage - February 15, 2004 - Farmington Bay, Davis
4. Male-winter plumage carrying rotted reeds - February 15,
2004 - Farmington Bay, Davis County, Utah
L 15 WS 18.5, Dark Cap, whitish cheeks, stiff tail, In breeding,
male has reddish-brown body, black
blue bill. Female has same plumage year round.
Dives and feeds on aquatic
insects, plants and crustaceans. Lives on open lakes in summer plus
the coast in winter when they form large flocks. Male cocks tail and
neck in courtship display. Lays 6-10 white eggs in nest of plant
attached to marsh plant. Females will dump eggs in nest of other
duck species such as Redheads or Canvasbacks. Precocial.