|Conservation status||Total population is evidently far below original levels, a sharper decline than for most ducks. Loss of nesting habitat is probably the main cause.|
|Family||Ducks and Geese|
|Habitat||Lakes, saltwater bays, estuaries; in summer, fresh marshes. For nesting season favors large marshes in prairies or intermountain valleys. Migrants gather on large lakes. In winter, mainly on coastal bays and lagoons, also on freshwater lakes inland.|
forages by diving, usually in water a few feet deep, or by dabbling and up-ending in very shallow water. In winter on shallow coastal lagoons may do most feeding by simply dipping head underwater.
usually 9-14, although true "normal" clutch size difficult to determine. Dull white to pale olive buff. Incubation is by female only, 23-29 days. Young: female leads young away from nest about a day they hatch. Young feed themselves; capable of flight at about 60-65 days.
female leads young away from nest about a day they hatch. Young feed themselves; capable of flight at about 60-65 days.
aquatic plants, insects. Diet is mainly leaves, stems, seeds, and roots of aquatic plants: shoalgrass, pondweeds, smartweeds, sedges, waterlilies, and others. Also eats many aquatic insects, especially in summer, plus mollusks, rarely small fish.
Nest site is in dense marsh (especially bulrushes) above shallow water, occasionally on dry ground. Bulky nest is built up of dead vegetation and anchored to standing growth, lined with down. Nesting is complicated by parasitic tendencies, typically laying eggs in nests of other Redheads and other waterbirds. Most females apparently are semi-parasites, laying several eggs in nests of other birds, then raising a clutch of their own. Several may lay eggs in a nest that is never incubated; such "dump nests" have been reported with up to 87 eggs.
Text © Kenn Kaufman, adapted from
Lives of North American Birds
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Migrates in flocks. In summer, when males abandon their mates, they may fly hundreds of miles to the north to lakes where they go through the flightless stage of molt. Main migration is fairly late in fall and early in spring.
- All Seasons - Common
- All Seasons - Uncommon
- Breeding - Common
- Breeding - Uncommon
- Winter - Common
- Winter - Uncommon
- Migration - Common
- Migration - Uncommon
See a fully interactive migration map for this species on the Bird Migration Explorer.Learn more
Songs and CallsLike the meow of a cat; also quacks..
Learn more about this sound collection.