Black-headed Duck vs African Pygmy-goose

Heteronetta atricapilla comparado con Nettapus auritus

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Side-by-Side Comparison

Atributo Black-headed Duck African Pygmy-goose
Nombre científico Heteronetta atricapilla Nettapus auritus
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 34,7 cm (13.7 in) 29,9 cm (11.8 in)
Peso 528,5 g (18.64 oz) 272,5 g (9.61 oz)
Dieta Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding …
Tamaño de la puesta 2 6-12
Population Trend
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Habitat Comparison

Hábitats compartidos

Black-headed Duck only

African Pygmy-goose only

Ninguno

African Pygmy-goose

Freshwater lakes, ponds, and rivers with floating water lilies and other aquatic vegetation across sub-Saharan Africa from Senegal to Tanzania. Nests in tree cavities near water. Highly dependent on water lily vegetation.

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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.

African Pygmy-goose

Canto

Male produces a soft, wheezy whistle; female gives a quiet, duck-like quack. Pairs exchange rapid twittering notes during courtship on lily-covered African pools.

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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.

African Pygmy-goose

Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.

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Estado de conservación

Least Concern

Black-headed Duck

Least Concern

African Pygmy-goose

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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.

African Pygmy-goose

Plumaje

Tiny. Males have glossy dark green head with orange facial patch and ear spot; chestnut-orange flanks; white underparts; black and green back. Females duller with dark eye-stripe. Small yellow-green bill.

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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.

African Pygmy-goose

El pigmeo africano o pato enano africano es el pato más pequeño de África y uno de los patos más pequeños del mundo. Tiene plumaje de color verde oscuro y blanco con el cuello de color castaño rojizo. Habita en lagunas tranquilas, estanques y pantanos con abundante vegetación flotante, especialmente lirios de agua, en África subsahariana.

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