Wandering Whistling-duck vs Black-headed Duck

Dendrocygna arcuata comparado con Heteronetta atricapilla

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Side-by-Side Comparison

Atributo Wandering Whistling-duck Black-headed Duck
Nombre científico Dendrocygna arcuata Heteronetta atricapilla
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 37,2 cm (14.6 in) 34,7 cm (13.7 in)
Peso 779,5 g (27.50 oz) 528,5 g (18.64 oz)
Dieta Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet …
Tamaño de la puesta 6-15 2
Population Trend
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Habitat Comparison

Hábitats compartidos

Wandering Whistling-duck only

Ninguno

Black-headed Duck 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.

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Song & Call Comparison

Wandering Whistling-duck

Canto

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.

Black-headed Duck

Canto

Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.

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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.

Black-headed Duck

Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.

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Estado de conservación

Least Concern

Wandering Whistling-duck

Least Concern

Black-headed Duck

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How to Tell Them Apart

Wandering Whistling-duck

Plumaje

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.

Black-headed Duck

Plumaje

Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.

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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.

Black-headed Duck

El pato cabeza negra es un pequeño pato buceador (~530 g) de América del Sur, familia Anatidae, y el único miembro del género Heteronetta. Tiene la cabeza negra en el macho y cuerpo marrón. Parásita de nido obligada: pone sus huevos en los nidos de otras aves acuáticas, especialmente fochas y pollas de agua. Habita en lagos y lagunas con vegetación emergente de Argentina, Bolivia, Brasil, Chile, Paraguay y Uruguay. No cría su propia cría nunca.

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