American Black Duck vs White-headed Duck
Anas rubripes comparado con Oxyura leucocephala
Side-by-Side Comparison
| Atributo | American Black Duck | White-headed Duck |
|---|---|---|
| Nombre científico | Anas rubripes | Oxyura leucocephala |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Endangered |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 29,7 cm (11.7 in) |
| Peso | 1211,25 g (42.73 oz) | 705,0 g (24.87 oz) |
| Dieta | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Dives for aquatic invertebrates, seeds, and plant roots in Mediterranean and Central Asian wetlands. Critically … |
| Tamaño de la puesta | 1-17 | 3-10 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
White-headed Duck only
Ninguno
American Black Duck
Freshwater and brackish wetlands in eastern North America from Atlantic Canada south along the coast to Georgia. Breeds in northern bogs and wetlands. Winters on coastal marshes, estuaries, and freshwater lakes.
Song & Call Comparison
American Black Duck
Female produces a loud, deep quacking series; male gives a low, raspy grunt. Voice is deeper and huskier than a Mallard; pairs call powerfully across northeastern North American wetlands.
White-headed Duck
Male produces a mechanical, rapid bill-drumming; female gives a harsh, grating quack. The drumming staccato display is the same pattern as other Oxyura stiff-tails; heard on Eurasian steppe lakes.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
White-headed Duck
Breeds in Spain, Turkey, central Asia, and Mongolia. Winters in the Mediterranean, the Middle East, and northern India. Globally endangered.
Estado de conservación
American Black Duck
White-headed Duck
How to Tell Them Apart
American Black Duck
Sooty dark brown body; head and neck paler buff with dark streaking. Iridescent purple speculum without white border. Males have yellow-green bill; females olive with orange blotches. Silvery underwings in …
White-headed Duck
Male has entirely white head with small black crown patch, rich chestnut-brown body, and large bulbous powder-blue bill. Female is brown with pale whitish face divided by dark streak across …
About These Birds
American Black Duck
El pato negro americano es un gran pato de color marrón muy oscuro con una cabeza más clara y un llamativo espéculo alar púrpura. Habita en humedales del este de Norteamérica y se está hibridando cada vez más con el pato de collar introducido en su rango, lo que representa una amenaza para su pureza genética. Prefiere marismas costeras, pantanos boscosos y lagos tranquilos.
White-headed Duck
El pato malvasía es un pato de cola tiesa en peligro de extinción con el macho de llamativa cabeza blanca y cuello negro con el pico azul brillante hinchado en la base. En el pasado fue cazado intensamente y su hábitat fue drenado, lo que lo llevó al borde de la extinción en el siglo XX. Gracias a esfuerzos de conservación intensivos, sus poblaciones se han recuperado parcialmente en el Mediterráneo.