American Black Duck vs Barnacle Goose
Anas rubripes comparado com Branta leucopsis
Side-by-Side Comparison
| Atributo | American Black Duck | Barnacle Goose |
|---|---|---|
| Nome científico | Anas rubripes | Branta leucopsis |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 53,4 cm (21.0 in) | 76,4 cm (30.1 in) |
| Peso | 1211,25 g (42.73 oz) | 1685,0 g (59.44 oz) |
| Dieta | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Large white swan grazing aquatic plants and grasses; upends for submerged vegetation; supplements diet with … |
| Tamanho da postura | 1-17 | 2-9 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
American Black Duck only
Barnacle 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.
Barnacle Goose
Breeds on inaccessible Arctic cliff ledges in Greenland, Svalbard, and Novaya Zemlya. Winters on coastal saltmarshes, pastures, and estuaries in northwestern Europe, particularly Scotland and Ireland.
Song & Call Comparison
American Black Duck
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.
Barnacle Goose
A rapid, high-pitched barking 'uk-uk-uk' given rapidly in flocks. Higher-pitched and more rapid than Canada Goose. Migrating flocks create a constant excited barking chorus.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Barnacle Goose
Breeds in Arctic tundra of Alaska and Canada; winters on the Pacific and Atlantic coasts of the United States and northern Mexico.
Estado de conservação
American Black Duck
Barnacle Goose
How to Tell Them Apart
American Black Duck
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 …
Barnacle Goose
Striking black, white and gray pattern. White face and forehead; black crown, neck, and upper breast. Gray back with black and white barring. White underparts. Black tail. Sexes similar; elegant …
About These Birds
American Black Duck
O pato-negro americano é um pato dabbling robusto encontrado no leste da América do Norte. É estreitamente relacionado com o pato-real e os dois hybridizam extensivamente. Apresenta uma plumagem escura castanho-preta característica com cabeça mais pálida e espelhos violeta nas asas. Habita zonas húmidas costeiras e de interior, florestas e pradarias ao longo das regiões orientais. É uma espécie cinegética importante, mas as suas populações diminuíram devido à hibridização com patos-reais e perda de habitat.
Barnacle Goose
O ganso-pato é um ganso médio com face branca característica, coroa, pescoço e peito pretos, e corpo cinzento. Cria em penhascos íngremes nas ilhas árticas e hiberna nas zonas húmidas da Europa Ocidental, principalmente nos Países Baixos, Irlanda e Escócia. A legendária conexão com percevejos do mar levou à crença medieval de que nasciam de cracas. As populações cresceram consideravelmente nas últimas décadas.