Wandering Whistling-duck vs Crested Shelduck
Dendrocygna arcuata comparado con Tadorna cristata
Side-by-Side Comparison
| Atributo | Wandering Whistling-duck | Crested Shelduck |
|---|---|---|
| Nombre científico | Dendrocygna arcuata | Tadorna cristata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Critically Endangered |
| Longitud | — | — |
| Envergadura | 37,2 cm (14.6 in) | 59,8 cm (23.5 in) |
| Peso | 779,5 g (27.50 oz) | 1235,0 g (43.56 oz) |
| Dieta | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | -- |
| Tamaño de la puesta | 6-15 | 10 |
| Population Trend | — | — |
Habitat Comparison
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.
Crested Shelduck
Historically known from coastal Korea, Siberia, and possibly Japan. Habitat preferences poorly known; specimens were collected near coasts and rivers. Possibly extinct.
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.
Crested Shelduck
Critically endangered; last confirmed sightings in 1971. No vocalizations reliably recorded. Presumed similar to related shelducks based on phylogeny but effectively unknown.
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.
Crested Shelduck
Estado de conservación
Wandering Whistling-duck
Crested Shelduck
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.
Crested Shelduck
Critically rare; known from few specimens. Males dark green head with bushy crest; black and white body with chestnut flanks. Females have white facial markings and brown-barred body. Possibly extinct; …
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.
Crested Shelduck
El tarro crestudo es una especie casi extinguida y extremadamente rara originaria de Corea, China y posiblemente Japón. Solo se conocen tres pieles de museo y avistamientos muy ocasionales en estado salvaje; no ha sido confirmada desde los años 1970. Tenía plumaje negro, blanco y verde con una cresta verde en la cabeza. Las causas de su probable extinción incluyen la caza y la pérdida de hábitat.