Adult male. Photo: Fyn Kynd/Flickr (CC BY 2.0)
Anas rubripes
| Conservation status | Still abundant locally, but has declined drastically in interior parts of range. Clearing of forest has favored invasion by Mallards, which hybridize extensively with Black Ducks, leading to genetic "swamping" of population. |
|---|---|
| Family | Ducks and Geese |
| Habitat | Marshes, bays, estuaries, ponds, rivers, lakes. Wide variety of aquatic habitats; found on lakes in northern forest and in salt marsh more often than most dabblers. Majority in winter in coastal estuaries and tidal marshes, lesser numbers on inland lakes, tree-lined ponds, wooded swamps. |
feeds in water by dabbling, up-ending, rarely by diving; feeds on land by grazing, plucking seeds, grubbing for roots.
7-11, sometimes 6-12, rarely 4-17. Creamy white to greenish buff. Incubation by female only, 23-33 days, typically 26-29. Young: all eggs typically hatch in space of a few hours. Female leads young to water, often after dark. Ducklings find their own food. Young fledge at age of about 2 months, and are abandoned by female about that time.
all eggs typically hatch in space of a few hours. Female leads young to water, often after dark. Ducklings find their own food. Young fledge at age of about 2 months, and are abandoned by female about that time.
omnivorous. Diet varies with location and season. On fresh water, feeds mainly on plant material, including seeds, leaves, roots, berries. Seeds of various grasses, pondweeds, sedges, and others often a major part of diet. In tidal zones may feed mainly on mussels, clams, snails, small crustaceans, aquatic arthropods. Young ducklings eat many insects.
Older birds may form pairs by early fall and remain together until following summer. Nest site variable; usually near water, as on banks or small islands, but can be up to a mile distant. Generally on ground among clumps of dense vegetation, sometimes in raised situation as on top of stump, in large tree cavity, on duck blind in water. Typical ground nest (built by female) is a shallow depression with plant material added, lined with down.
Audubon’s scientists have used 140 million bird observations and sophisticated climate models to project how climate change will affect this bird’s range in the future.
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