Anas atricapilla Merrem, 1841, Buenos Aires. Monotypic.
OTHER COMMON NAMES
French: Hйtйronette а tкte noire; German: Kukkucksente; Spanish: Pato Rinconero.
13.8–15.8 in (35–40 cm); 1.1–1.3 lb (513–565 g). Black head and upperparts, mottled brown underparts.
Santiago, Chile, in west, to Paraguay and Buenos Aires province, Argentina, in east.
Freshwater wetlands with abundant emergent vegetation in open or sparsely vegetated regions.
FEEDING ECOLOGY AND DIET
Feeds on seeds, plants, and some aquatic invertebrates by diving, dabbling, head-dipping, upending, and mud-filtering.
Probably seasonally monogamous for only short periods of time. Breeding mostly between Sept. and Dec. Only completely parasitic anatid. Female lays on average 2 eggs in the nests of other waterfowl, especially coots (Fulica) and rosy-billed porchard.
Common throughout its range, but may be threatened by habitat loss, hunting, and pollution.
SIGNIFICANCE TO HUMANS
Hunted for food.
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