American Black Duck vs Velvet Scoter
Anas rubripes comparado con Melanitta fusca
Side-by-Side Comparison
| Atributo | American Black Duck | Velvet Scoter |
|---|---|---|
| Nombre científico | Anas rubripes | Melanitta fusca |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Vulnerable |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 51,8 cm (20.4 in) |
| Peso | 1211,25 g (42.73 oz) | 1635,1666666666667 g (57.68 oz) |
| Dieta | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Dives for mussels, cockles, and crustaceans in coastal and brackish waters. Freshwater insects taken on … |
| Tamaño de la puesta | 1-17 | 7-9 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
Ninguno
Velvet Scoter only
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.
Velvet Scoter
Male emits a low, melodious whistled note; female produces a guttural, rasping call. The male's soft whistle contrasts with the female's harsh, buzzy alarm call on European coasts.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Velvet Scoter
Breeds in boreal forests of northern Europe and western Siberia. Winters on coasts of northwestern Europe, the Black Sea, and Caspian Sea.
Estado de conservación
American Black Duck
Velvet Scoter
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 …
Velvet Scoter
Male is jet black overall with a small white teardrop below eye and white speculum visible in flight; yellow-sided bill with black knob at base. Female is dark brown with …
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.
Velvet Scoter
El negrón especulado es el mayor negrón europeo, con el macho de color negro con una mancha blanca bajo el ojo y espéculo blanco en el ala. Cría en bosques boreales y tundra de Europa y Asia, e inverna en costas marinas, especialmente en el mar Báltico y el Atlántico norte. Se alimenta principalmente de mejillones y otros mariscos en sus cuarteles de invierno.