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