American Black Duck vs Bar-headed Goose
Anas rubripes comparado con Anser indicus
Side-by-Side Comparison
| Atributo | American Black Duck | Bar-headed Goose |
|---|---|---|
| Nombre científico | Anas rubripes | Anser indicus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 87,6 cm (34.5 in) |
| Peso | 1211,25 g (42.73 oz) | 2288,0 g (80.71 oz) |
| Dieta | -- | -- |
| Tamaño de la puesta | 1-17 | 3-8 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
Bar-headed Goose 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.
Bar-headed Goose
Breeds on high-altitude lakes and rivers at 4,000–5,000 m in Central Asia (Tibet, Mongolia, Ladakh). Migrates over the Himalayas. Winters on rivers, lakes, and agricultural fields in the Indian subcontinent.
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.
Bar-headed Goose
A nasal, goose-like honking 'wang-wang-wang'. Flocks give persistent calling during high-altitude Himalayan migration — among the highest migrations of any bird species.
Estado de conservación
American Black Duck
Bar-headed Goose
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 …
Bar-headed Goose
White head with two distinctive black bars across crown. Yellow-orange bill and legs. Back and wings pale gray; underparts white. Black-tipped primaries. Sexes similar; famed for Himalayan migration.
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.
Bar-headed Goose
El ganso índico o ganso de las barras es famoso por ser el ave con vuelos documentados a mayor altitud, habiendo sido observado cruzando el Himalaya a alturas superiores a 7.000 metros. Tiene el plumaje gris claro con la cabeza blanca y dos barras negras en la coronilla. Cría en el Tíbet y Asia central y migra al sur de Asia para pasar el invierno.