Black-headed Duck vs Hooded Merganser

Heteronetta atricapilla comparado con Lophodytes cucullatus

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Side-by-Side Comparison

Atributo Black-headed Duck Hooded Merganser
Nombre científico Heteronetta atricapilla Lophodytes cucullatus
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 34,7 cm (13.7 in) 37,3 cm (14.7 in)
Peso 528,5 g (18.64 oz) 638,0 g (22.50 oz)
Dieta Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … Dives for small fish, aquatic invertebrates, and frogs in clear freshwater streams and ponds. Uses …
Tamaño de la puesta 2 6-18
Population Trend
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Habitat Comparison

Hábitats compartidos

Black-headed Duck only

Hooded Merganser only

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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.

Hooded Merganser

Canto

Male produces a low, rolling rolling-tum tumbling call; female gives a harsh, grating quack. The male's frog-like rolling call is unique among North American ducks during winter courtship.

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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.

Hooded Merganser

Breeds in forested wetlands of North America from southern Canada to the northern United States. Winters on rivers and lakes south to Mexico.

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Estado de conservación

Least Concern

Black-headed Duck

Least Concern

Hooded Merganser

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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.

Hooded Merganser

Plumaje

Male has fan-shaped black-and-white erectile crest; black head and neck, white breast with two black bars, rich cinnamon flanks. Female is greyish-brown with rusty-cinnamon crest, paler below.

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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.

Hooded Merganser

El merganso copetón es un pequeño y vistoso merganso de América del Norte con un gran y llamativo moño redondeado que el macho puede desplegar como un abanico, mostrando su centro blanco rodeado de negro. Cría en cavidades de árboles cerca de pequeños lagos y ríos boscosos. Es un experto pescador que captura peces y crustáceos en aguas claras.

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