Brent Goose vs Green Pygmy-goose

Branta bernicla comparado con Nettapus pulchellus

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Side-by-Side Comparison

Atributo Brent Goose Green Pygmy-goose
Nombre científico Branta bernicla Nettapus pulchellus
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 63,9 cm (25.2 in) 33,8 cm (13.3 in)
Peso 1335,0 g (47.09 oz) 328,75 g (11.60 oz)
Dieta Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … Eats seeds, aquatic plants, and invertebrates; dabbles in shallow fresh water; diet varies between seasons …
Tamaño de la puesta 1-10 8-12
Population Trend
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Habitat Comparison

Hábitats compartidos

Brent Goose only

Green Pygmy-goose only

Ninguno

Brent Goose

Breeds on high-Arctic tundra; winters on estuaries, coastal mudflats, saltmarshes, and sea-grass beds along Atlantic and Pacific coastlines. One of the most strictly coastal wintering geese.

Green Pygmy-goose

Lily-covered tropical freshwater billabongs, lagoons, and seasonal floodplains in New Guinea and the tropical Top End of the Northern Territory and Queensland, Australia. Highly dependent on aquatic vegetation.

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Song & Call Comparison

Brent Goose

Canto

A low, guttural 'rronk' or 'ronk-ronk' from flocks. Soft nasal calls in feeding groups. A subtle, understated call for a goose — less loud than most Anser geese.

Green Pygmy-goose

Canto

Male gives a high-pitched, melodic two-note whistle; female produces a quiet, nasal grunt. Courtship includes rapid chattering exchanges between paired birds on tropical lagoons.

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Geographic Range & Migration

Brent Goose

Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.

Green Pygmy-goose

Breeds across northern and central Eurasia; winters in tropical Africa and South Asia.

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Estado de conservación

Least Concern

Brent Goose

Least Concern

Green Pygmy-goose

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How to Tell Them Apart

Brent Goose

Plumaje

Small; mostly black head, neck, and breast. Small white neck-patch on adults. Back dark brownish-gray; belly pale gray to white depending on subspecies. White undertail coverts. Sexes similar.

Green Pygmy-goose

Plumaje

Males have dark green head and neck with white cheek patch; dark back; white underparts; flanks gray-green with fine barring. Females duller with brown cap and white face. White wing …

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About These Birds

Brent Goose

El barnacla brenta o barnacla negruzca es un pequeño ganso marino de color negro y gris oscuro con un pequeño parche blanco a los lados del cuello. Cría en la tundra ártica y migra a zonas costeras templadas del hemisferio norte en invierno, donde se alimenta principalmente de zostera, un tipo de hierba marina. Es el único ganso que pasa el invierno en ambientes exclusivamente marinos.

Green Pygmy-goose

El pato enano australiano es un pequeño y vistoso pato endémico de Australia y Nueva Guinea, el macho de color verde iridiscente y blanco con la cabeza oscura. Habita en pantanos y estanques de agua dulce con abundantes lirios acuáticos y vegetación flotante en el norte de Australia y el sur de Nueva Guinea. Nidifica en huecos de árboles sobre el agua.

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