Black-headed Duck vs White-headed Duck

Heteronetta atricapilla comparado con Oxyura leucocephala

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Side-by-Side Comparison

Atributo Black-headed Duck White-headed Duck
Nombre científico Heteronetta atricapilla Oxyura leucocephala
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Endangered
Longitud
Envergadura 34,7 cm (13.7 in) 29,7 cm (11.7 in)
Peso 528,5 g (18.64 oz) 705,0 g (24.87 oz)
Dieta Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … Dives for aquatic invertebrates, seeds, and plant roots in Mediterranean and Central Asian wetlands. Critically …
Tamaño de la puesta 2 3-10
Population Trend
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Habitat Comparison

Hábitats compartidos

Black-headed Duck only

White-headed Duck only

Ninguno

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Song & Call Comparison

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.

White-headed Duck

Canto

Male produces a mechanical, rapid bill-drumming; female gives a harsh, grating quack. The drumming staccato display is the same pattern as other Oxyura stiff-tails; heard on Eurasian steppe lakes.

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Geographic Range & Migration

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.

White-headed Duck

Breeds in Spain, Turkey, central Asia, and Mongolia. Winters in the Mediterranean, the Middle East, and northern India. Globally endangered.

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Estado de conservación

Least Concern

Black-headed Duck

Endangered

White-headed Duck

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How to Tell Them Apart

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.

White-headed Duck

Plumaje

Male has entirely white head with small black crown patch, rich chestnut-brown body, and large bulbous powder-blue bill. Female is brown with pale whitish face divided by dark streak across …

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About These Birds

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.

White-headed Duck

El pato malvasía es un pato de cola tiesa en peligro de extinción con el macho de llamativa cabeza blanca y cuello negro con el pico azul brillante hinchado en la base. En el pasado fue cazado intensamente y su hábitat fue drenado, lo que lo llevó al borde de la extinción en el siglo XX. Gracias a esfuerzos de conservación intensivos, sus poblaciones se han recuperado parcialmente en el Mediterráneo.

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