American Black Duck vs Australian Shelduck

Anas rubripes comparado con Tadorna tadornoides

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Side-by-Side Comparison

Atributo American Black Duck Australian Shelduck
Nombre científico Anas rubripes Tadorna tadornoides
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 53,4 cm (21.0 in) 70,7 cm (27.8 in)
Peso 1211,25 g (42.73 oz) 1424,5 g (50.25 oz)
Dieta Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … Dabbles for aquatic invertebrates, seeds, and plant material in spring; forages in shallow ponds; diet …
Tamaño de la puesta 1-17 5-19
Population Trend
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Habitat Comparison

Hábitats compartidos

American Black Duck only

Australian Shelduck 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.

Australian Shelduck

Inland salt lakes, ephemeral lakes, estuaries, coastal bays, and agricultural dams in southern Australia from Queensland west to Western Australia. Nests in burrows, hollow logs, and tree cavities.

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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.

Australian Shelduck

Canto

Male gives a whistling 'zzzeet'; female gives a loud, deep cackling 'uk-uk-uk'. Loud, far-carrying calls from Australian wetlands. Considered one of the noisier shelducks.

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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.

Australian Shelduck

Breeds across the Palearctic from Iceland and western Europe east to Siberia; winters in Africa, South Asia, and Southeast Asia.

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Estado de conservación

Least Concern

American Black Duck

Least Concern

Australian Shelduck

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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 …

Australian Shelduck

Plumaje

Males dark chestnut with black head showing green gloss; white neck collar. White inner wing with iridescent green speculum. Females have white eye-ring and white facial area. Chestnut breast; black …

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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.

Australian Shelduck

El tarro australiano es un grande pato de Australia con la cabeza de color negro verdoso en el macho y el ojo y la base del pico blancos en la hembra. El cuerpo es de color castaño rojizo con marcas alares blancas y negras. Habita en humedales abiertos, lagos y embalses en el sur de Australia, incluyendo Tasmania. Pasta hierba como los gansos, alejándose frecuentemente del agua.

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