American Black Duck vs Long-tailed Duck
Anas rubripes comparado con Clangula hyemalis
Side-by-Side Comparison
| Atributo | American Black Duck | Long-tailed Duck |
|---|---|---|
| Nombre científico | Anas rubripes | Clangula hyemalis |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Vulnerable |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 43,1 cm (17.0 in) |
| Peso | 1211,25 g (42.73 oz) | 782,0 g (27.58 oz) |
| Dieta | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Dives deeply for crustaceans, molluscs, and small fish in Arctic and subarctic seas. Freshwater invertebrates … |
| Tamaño de la puesta | 1-17 | 2-11 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
Long-tailed 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.
Long-tailed Duck
Male sings a musical, yodeling ow-owlet-aaaalett sequence; female gives a low, grunting quack. The male's loud, harmonious yodeling is arguably the most musical call among all waterfowl species.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Long-tailed Duck
Circumpolar High Arctic breeder. Winters at sea on coasts of northwestern Europe, northeastern North America, and the Bering Sea region.
Estado de conservación
American Black Duck
Long-tailed 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 …
Long-tailed Duck
Male in winter is mostly white with dark brown chest band, scapulars, and cheek patch; elongated central tail feathers extend well beyond body. Female is brownish with white face, dark …
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.
Long-tailed Duck
El pato havelda es un pato marino ártico reconocible por la larga y estrecha cola del macho y su llamativo plumaje blanco y negro. Cría en la tundra ártica y en las costas del norte, invernando en grandes masas de agua en mares abiertos. Es notable por bucear a mayor profundidad que cualquier otro pato, registrándose inmersiones de hasta 60 metros.