American Black Duck vs Siberian Scoter
Anas rubripes comparado con Melanitta stejnegeri
Side-by-Side Comparison
| Atributo | American Black Duck | Siberian Scoter |
|---|---|---|
| Nombre científico | Anas rubripes | Melanitta stejnegeri |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 53,4 cm (21.0 in) |
| Peso | 1211,25 g (42.73 oz) | 1267,5 g (44.71 oz) |
| Dieta | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Dives for bivalves, crustaceans, and aquatic invertebrates in coastal East Asian waters. Diet similar to … |
| Tamaño de la puesta | 1-17 | 6-9 |
| Population Trend | — | — |
Habitat Comparison
American Black Duck only
Siberian 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.
Siberian Scoter
Male emits a soft, piping whistle; female produces a guttural, grating call. Voice resembles White-winged Scoter; heard during winter on East Asian coasts and large inland seas.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Siberian Scoter
Breeds in boreal forests and tundra of central and eastern Siberia. Winters along the coasts of Japan, Korea, and northeastern China.
Estado de conservación
American Black Duck
Siberian 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 …
Siberian Scoter
Male is uniformly black with white secondaries forming wing patch; orange-yellow bill has large black knob at base and pale yellow tip. Female dark brown with paler facial patches and …
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.
Siberian Scoter
El negrón de Stejneger es un gran pato marino de Asia del este con el macho de color negro brillante con un llamativo pico naranja y amarillo con manchas naranjas y negras. Cría en el nordeste de Asia y pasa el invierno en el mar Amarillo, el mar de Japón y las aguas costeras del noreste de Asia. Está clasificado como vulnerable por el declive de sus poblaciones.