American Black Duck vs Red-breasted Goose
Anas rubripes 对比 Branta ruficollis
Side-by-Side Comparison
| 属性 | American Black Duck | Red-breasted Goose |
|---|---|---|
| 学名 | Anas rubripes | Branta ruficollis |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 53.4 cm (21.0 in) | 69.1 cm (27.2 in) |
| 体重 | 1211.25 g (42.73 oz) | 1253.25 g (44.21 oz) |
| 食性 | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Grazes grasses, seeds, and aquatic plants; introduced to many wetlands; upends in shallow water for … |
| 产卵数 | 1-17 | 3-10 |
| Population Trend | — | — |
Habitat Comparison
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.
Red-breasted Goose
Breeds on river-terrace tundra in northwestern Siberia, often near Peregrine or Rough-legged Buzzard nests for protection. Winters on agricultural steppes and lake margins around the Black Sea and Caspian Sea.
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.
Red-breasted Goose
A high-pitched, rapid 'kik-kik-kik' call. More vocal during migration; flocks give constant chattering. Considered a more squeaky, high-pitched call than other Branta geese.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Red-breasted Goose
Breeds in Arctic and subarctic tundra in North America; winters along both US coasts and interior wetlands south to Central America.
保护状况
American Black Duck
Red-breasted 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 …
Red-breasted Goose
Unmistakable; vivid chestnut-red patch on face and breast bordered by white stripes. Black crown, back, wings, and belly. White flank stripe and undertail. Compact and striking. Sexes similar.
About These Birds
American Black Duck
A large dark brown dabbling duck closely resembling a very dark female Mallard, with purple speculum, yellowish-olive bill in males, and orange legs. Common in eastern North America. Hybridizes freely with Mallard; pure populations declining in the interior.
Red-breasted Goose
红胸黑雁是颜色鲜艳的小型雁类，胸部和脸侧具鲜明的栗红色斑块，头颈黑色，具白色边界线，腹部黑色。繁殖于西伯利亚北部苔原，越冬于里海和黑海沿岸，尤以罗马尼亚、保加利亚为主。由于越冬地农业变化和猎捕，被列为易危物种。