Wandering Whistling-duck vs Velvet Scoter
Dendrocygna arcuata comparado con Melanitta fusca
Side-by-Side Comparison
| Atributo | Wandering Whistling-duck | Velvet Scoter |
|---|---|---|
| Nombre científico | Dendrocygna arcuata | Melanitta fusca |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Vulnerable |
| Longitud | — | — |
| Envergadura | 37,2 cm (14.6 in) | 51,8 cm (20.4 in) |
| Peso | 779,5 g (27.50 oz) | 1635,1666666666667 g (57.68 oz) |
| Dieta | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Dives for mussels, cockles, and crustaceans in coastal and brackish waters. Freshwater insects taken on … |
| Tamaño de la puesta | 6-15 | 7-9 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Wandering Whistling-duck only
Ninguno
Velvet Scoter only
Wandering Whistling-duck
Tropical freshwater marshes, flooded grasslands, swamps, and lake margins from the Philippines and Indonesia through Papua New Guinea to northern and eastern Australia. Nomadic following wet season flooding.
Song & Call Comparison
Wandering Whistling-duck
A soft whistle 'whi-whi-whi' in flight. Less vocal than other whistling-ducks; flocks tend to be quieter. Given at dawn and dusk during flight to roosting or feeding areas.
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
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
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
Wandering Whistling-duck
Velvet Scoter
How to Tell Them Apart
Wandering Whistling-duck
Rich chestnut-brown head and neck; dark brown back. Flanks rufous with pale buff streaks and dark spots. Belly blackish. Long, dark pinkish legs. Upright posture typical of whistling-ducks. Sexes similar.
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
Wandering Whistling-duck
El pato silbador vagabundo es un pato silbador de distribución amplia en las regiones tropicales de Asia y el Pacífico, desde Borneo e Indonesia hasta Nueva Guinea y Australia. Tiene plumaje castaño con blanco y negro en los flancos. Habita en humedales tropicales, pantanos, lagunas, estanques y arrozales. Es una especie nómada que sigue las lluvias en busca de humedales.
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.