American Black Duck vs Andean Goose

Anas rubripes comparado con Chloephaga melanoptera

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Side-by-Side Comparison

Atributo American Black Duck Andean Goose
Nombre científico Anas rubripes Chloephaga melanoptera
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 53,4 cm (21.0 in) 86,3 cm (34.0 in)
Peso 1211,25 g (42.73 oz) 2617,5 g (92.33 oz)
Dieta Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … Eats grasses, seeds, molluscs, and aquatic invertebrates; wades in shallow water; diet includes invertebrates year-round.
Tamaño de la puesta 1-17 5-10
Population Trend
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Habitat Comparison

Hábitats compartidos

American Black Duck only

Andean Goose only

American Black Duck

Freshwater and brackish wetlands in eastern North America from Atlantic Canada south along the coast to Georgia. Breeds in northern bogs and wetlands. Winters on coastal marshes, estuaries, and freshwater lakes.

Andean Goose

High-altitude puna grassland, bofedales (cushion bogs), and lakeshores at 3,500–5,500 m in the Andes from Peru through Bolivia and Chile to northwestern Argentina. Grazes beside glacial and alpine lakes.

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Song & Call Comparison

American Black Duck

Canto

Female produces a loud, deep quacking series; male gives a low, raspy grunt. Voice is deeper and huskier than a Mallard; pairs call powerfully across northeastern North American wetlands.

Andean Goose

Canto

A loud, cackling 'kek-kek-kek' from high-altitude Andean puna. Pairs are territorial and vocal. Calls carry well across open altiplano above 4,000 m elevation.

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Geographic Range & Migration

American Black Duck

Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.

Andean Goose

Formerly widespread on the Mascarene Island of Réunion. Extinct in the 17th century; extirpated by hunting and introduced predators.

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Estado de conservación

Least Concern

American Black Duck

Least Concern

Andean Goose

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How to Tell Them Apart

American Black Duck

Plumaje

Sooty dark brown body; head and neck paler buff with dark streaking. Iridescent purple speculum without white border. Males have yellow-green bill; females olive with orange blotches. Silvery underwings in …

Andean Goose

Plumaje

Entirely white plumage except black-tipped primaries and black tail. Bill and legs coral-pink. Larger than most Chloephaga. Sexes similar. Inhabits high Andean lakes and grasslands above 3,000 m.

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About These Birds

American Black Duck

El pato negro americano es un gran pato de color marrón muy oscuro con una cabeza más clara y un llamativo espéculo alar púrpura. Habita en humedales del este de Norteamérica y se está hibridando cada vez más con el pato de collar introducido en su rango, lo que representa una amenaza para su pureza genética. Prefiere marismas costeras, pantanos boscosos y lagos tranquilos.

Andean Goose

La guayata o ganso andino es un ganso de los Andes que habita en los páramos y el altiplano desde el sur de Perú hasta el norte de Chile y Argentina, a menudo por encima de los 4.500 metros. Tiene plumaje casi completamente blanco con las alas de color negro brillante. Es el ganso que vive a mayor altitud en el mundo, tolerando condiciones de frío y baja presión de oxígeno extremas.

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