American Black Duck vs Labrador Duck
Anas rubripes 对比 Camptorhynchus labradorius
Side-by-Side Comparison
| 属性 | American Black Duck | Labrador Duck |
|---|---|---|
| 学名 | Anas rubripes | Camptorhynchus labradorius |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Extinct |
| 体长 | — | — |
| 翼展 | 53.4 cm (21.0 in) | — |
| 体重 | 1211.25 g (42.73 oz) | 673.5 g (23.76 oz) |
| 食性 | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Extinct; soft spatulate bill suggests feeding on soft-shelled benthic molluscs and crustaceans in shallow coastal … |
| 产卵数 | 1-17 | -- |
| 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.
Labrador Duck
Historically inhabited sandy coastal bays, estuaries, and mussel beds from Labrador to the mid-Atlantic United States. Extinct since 1878. Nesting grounds never confirmed; likely bred in Labrador.
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.
Labrador Duck
Extinct (EX). No recordings exist. This North American scoter relative likely gave a quiet, grunting call during display based on the bill morphology suggesting possible unusual vocalizations.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Labrador Duck
Formerly along the eastern coast of North America from Labrador to Chesapeake Bay. Extinct by 1878; last specimen shot in New York.
保护状况
American Black Duck
Labrador Duck
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 …
Labrador Duck
Extinct; males had white head and breast with black back, wings and belly; distinctive white wing patch. Broad bill with comb-like lamellae. Females brown. Last specimen 1875; first North American …
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.
Labrador Duck
拉布拉多鸭已于19世纪后期灭绝，是北美历史上最先消失的鸟类之一。曾繁殖于加拿大东部，越冬于美国大西洋沿岸。雄鸟黑白相间，外形独特；雌鸟褐色。灭绝原因尚不完全清楚，可能与过度猎捕、沿海湿地破坏及食物减少有关。最后确认的标本记录于1878年。