White-winged Duck vs Black-headed Duck

Asarcornis scutulata comparado con Heteronetta atricapilla

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Side-by-Side Comparison

Atributo White-winged Duck Black-headed Duck
Nombre científico Asarcornis scutulata Heteronetta atricapilla
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Critically Endangered Least Concern
Longitud
Envergadura 68,3 cm (26.9 in) 34,7 cm (13.7 in)
Peso 2950,0 g (104.06 oz) 528,5 g (18.64 oz)
Dieta Feeds on seeds, plant material, and aquatic invertebrates; dabbles in shallow water; diet varies widely … 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

White-winged Duck only

Black-headed Duck only

White-winged Duck

Undisturbed lowland tropical forest near slow rivers, pools, and forest swamps at low elevations in northeastern India, Bangladesh, Myanmar, and Sumatra. Requires large trees with nest cavities near permanent water.

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Song & Call Comparison

White-winged Duck

Canto

Critically endangered; extremely rare in wild. Gives low guttural hissing calls and soft wing-beating sounds. Vocalizations in wild scarcely documented given its rarity.

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

White-winged Duck

Breeds in northern Eurasia; winters in sub-Saharan Africa. A classic Palearctic–African migrant with a wide wintering range.

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

Critically Endangered

White-winged Duck

Least Concern

Black-headed Duck

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How to Tell Them Apart

White-winged Duck

Plumaje

Dark brown body with pale spotting on head and neck. Bold white wing patch visible in flight. Yellowish-orange bill; legs orange. Head pale buffish-white speckled brown. Critically endangered SE Asian …

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

White-winged Duck

El pato blanquibronceado o pato silvestre es una especie en peligro de extinción del sur y el sudeste de Asia. Tiene el plumaje negro brillante con la cabeza y el cuello de color blanco en el macho. Habita en densos bosques tropicales con ríos, lagunas y pantanos en India, Bangladés, Myánmar, Laos, Tailandia, Vietnam e Indonesia. La deforestación lo ha reducido a pequeñas poblaciones.

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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