Black-bellied Whistling-duck vs Black-headed Duck

Dendrocygna autumnalis comparado con Heteronetta atricapilla

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Side-by-Side Comparison

Atributo Black-bellied Whistling-duck Black-headed Duck
Nombre científico Dendrocygna autumnalis Heteronetta atricapilla
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 48,2 cm (19.0 in) 34,7 cm (13.7 in)
Peso 757,9 g (26.73 oz) 528,5 g (18.64 oz)
Dieta Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes and agricultural fields eating … Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet …
Tamaño de la puesta 9-18 2
Population Trend
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Habitat Comparison

Hábitats compartidos

Black-bellied Whistling-duck only

Ninguno

Black-headed Duck only

Black-bellied Whistling-duck

Freshwater wetlands, ponds, lake margins, flooded fields, and wooded swamps from the southern United States and Mexico through Central America to Ecuador, Bolivia, and Argentina. Uses nest boxes readily.

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Song & Call Comparison

Black-bellied Whistling-duck

Canto

A high, reedy whistle 'pe-che-che-ne' given in flight. Flocks produce a continuous whistling chorus. Also gives a squeaky 'whe-eee' contact call while swimming.

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

Black-bellied Whistling-duck

Inhabits freshwater marshes and riverbanks from southeastern Brazil to northern Argentina and Bolivia. Sedentary; locally common.

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

Black-bellied Whistling-duck

Least Concern

Black-headed Duck

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How to Tell Them Apart

Black-bellied Whistling-duck

Plumaje

Gray head with brown cap and chestnut breast; black belly is distinctive. Wings show broad white patch in flight. Coral-pink bill and long pink legs. Upright posture. 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

Black-bellied Whistling-duck

El pato silbador piquirrojo es un pato silbador de América, reconocible por el largo pico rojo, las patas rojas y el plumaje de color castaño con blanco en el ala en vuelo. Es un pato sociable y ruidoso que habita en lagunas, pantanos y humedales tropicales desde el sur de Texas hasta el norte de Argentina. Anida en huecos de árboles, a menudo en cavidades de palmeras.

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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