Ross's Goose vs Wandering Whistling-duck
Anser rossii comparado con Dendrocygna arcuata
Side-by-Side Comparison
| Atributo | Ross's Goose | Wandering Whistling-duck |
|---|---|---|
| Nombre científico | Anser rossii | Dendrocygna arcuata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 69,2 cm (27.2 in) | 37,2 cm (14.6 in) |
| Peso | 1513,5 g (53.39 oz) | 779,5 g (27.50 oz) |
| Dieta | Eats aquatic plants, seeds, and grasses near wetlands; omnivorous in breeding; takes invertebrates in shallow … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| Tamaño de la puesta | 2-8 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Ross's Goose
Breeds on tundra near Hudson Bay and the central Canadian Arctic. Winters in agricultural fields, rice paddies, and wetlands in the central and southern United States, particularly California's Central Valley.
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
Ross's Goose
A high, nasal yelping 'whoik' or 'hoik' — higher-pitched than Snow Goose. Flocks mix with Snow Geese; calls differ noticeably by pitch. Fast, repeated notes in flight.
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.
Geographic Range & Migration
Ross's Goose
Breeds in high Arctic tundra; winters at sea in the North Atlantic from Iceland to the British Isles and northeastern United States.
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
Estado de conservación
Ross's Goose
Wandering Whistling-duck
How to Tell Them Apart
Ross's Goose
Smallest white North American goose; pure white plumage with black wingtips. Short triangular pink bill with warty pinkish-gray base. Pink-red legs. Occasional blue morph. Sexes similar.
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.
About These Birds
Ross's Goose
El ganso de Ross es el menor ganso blanco americano, similar al ganso de las nieves pero más pequeño, con el pico más corto y sin el galpón negro en la mandíbula. Cría en la tundra ártica del norte de Canadá y migra al sur de California y el golfo de México para pasar el invierno. La caza casi lo extinguió a principios del siglo XX, pero sus poblaciones se han recuperado.
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.