American Black Duck vs Baer's Pochard

Anas rubripes comparado con Aythya baeri

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Side-by-Side Comparison

Atributo American Black Duck Baer's Pochard
Nombre científico Anas rubripes Aythya baeri
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Critically Endangered
Longitud
Envergadura 53,4 cm (21.0 in) 40,4 cm (15.9 in)
Peso 1211,25 g (42.73 oz) 707,25 g (24.95 oz)
Dieta Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … Dives for molluscs and aquatic invertebrates; diet dominated by hard-shelled benthic prey in coastal shallow-water …
Tamaño de la puesta 1-17 6-13
Population Trend
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Habitat Comparison

Hábitats compartidos

American Black Duck only

Baer's Pochard only

Ninguno

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.

Baer's Pochard

Breeds on lakes and rivers in boreal forests of eastern Siberia and northeastern China. Winters on freshwater lakes and wetlands in eastern and southeastern Asia. Critically Endangered; tiny remaining population.

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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.

Baer's Pochard

Canto

Male gives a low, grating wheeze; female produces a harsh quacking series. Calls resemble Tufted Duck but slightly softer; among the rarest duck calls in East Asia due to its …

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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.

Baer's Pochard

Breeds in Arctic Canada and Alaska; winters at sea off both US coasts and in the Great Lakes during migration.

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Estado de conservación

Least Concern

American Black Duck

Critically Endangered

Baer's Pochard

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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 …

Baer's Pochard

Plumaje

Males have dark glossy greenish-black head; chestnut breast; white flanks and undertail. White eye. Females brown with chestnut breast and pale face patch. White wing stripe in flight. Critically endangered …

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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.

Baer's Pochard

El porrón de Baer es una especie de pato buceador en peligro crítico de extinción que cría en el este de Siberia y el nordeste de China. El macho tiene la cabeza y el cuello de color verde-negro brillante con el ojo blanco. Su población ha colapsado en los últimos decenios hasta contar con sólo unos cientos de individuos, posiblemente debido a la pérdida de hábitat en sus cuarteles de invierno.

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