Cackling Goose vs Black-headed Duck

Branta hutchinsii comparado con Heteronetta atricapilla

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Side-by-Side Comparison

Atributo Cackling Goose Black-headed Duck
Nombre científico Branta hutchinsii Heteronetta atricapilla
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 79,3 cm (31.2 in) 34,7 cm (13.7 in)
Peso 1801,8 g (63.56 oz) 528,5 g (18.64 oz)
Dieta Grazes aquatic vegetation and sedges in Northern Hemisphere wetlands; migratory; winter diet of eelgrass and … Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet …
Tamaño de la puesta 3-6 2
Population Trend
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Habitat Comparison

Hábitats compartidos

Cackling Goose only

Ninguno

Black-headed Duck only

Ninguno

Cackling Goose

Breeds on low-lying Arctic and subarctic tundra. Winters on grasslands, agricultural fields, and coastal marshes in the central and western United States. Often found in mixed flocks with Canada Geese.

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Song & Call Comparison

Cackling Goose

Canto

A high-pitched, yelping 'luk-luk' or 'likl-likl' — higher-pitched and smaller-sounding than Canada Goose. Given rapidly in flock flight. Useful identification feature.

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

Cackling Goose

Breeds in Arctic Canada; winters on the Atlantic coast from New England to Florida, occasionally to the Bahamas and Gulf Coast.

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

Cackling Goose

Least Concern

Black-headed Duck

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How to Tell Them Apart

Cackling Goose

Plumaje

Resembles miniature Canada Goose; black head and neck with white chin strap. Brown-gray back; pale underparts. White undertail. Short neck and stubby bill distinguish from Canada Goose. 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

Cackling Goose

El barnaclo de Hutchins es una especie de ganso separada recientemente del barnacla canadiense, y es generalmente más pequeño. Cría en islas árticas del norte de Canadá y migra al sur en invierno. Tiene el mismo patrón básico de plumaje que el barnacla canadiense: partes superiores pardas, pecho claro y gorguera negra con mejillas blancas, pero es de menor tamaño.

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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