Madagascar Teal vs American Black Duck
Anas bernieri 对比 Anas rubripes
Side-by-Side Comparison
| 属性 | Madagascar Teal | American Black Duck |
|---|---|---|
| 学名 | Anas bernieri | Anas rubripes |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Endangered | Least Concern |
| 体长 | — | — |
| 翼展 | 38.9 cm (15.3 in) | 53.4 cm (21.0 in) |
| 体重 | 365.0 g (12.88 oz) | 1211.25 g (42.73 oz) |
| 食性 | Dives for molluscs, crustaceans, and aquatic invertebrates; diet dominated by hard-shelled benthic invertebrates year-round. | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … |
| 产卵数 | 2-10 | 1-17 |
| Population Trend | — | — |
Habitat Comparison
Madagascar Teal
Mangroves, coastal lagoons, freshwater lakes, and rivers of western Madagascar. Endangered; restricted to small fragmented wetland areas. Nests in mangrove cavities or tree holes near water.
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.
Song & Call Comparison
Madagascar Teal
Female gives a nasal, quacking series; male utters a soft whistle. Extremely rare; calls resemble Grey Teal but slightly softer; heard only in restricted Malagasy freshwater habitat.
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.
Geographic Range & Migration
Madagascar Teal
Breeds across northern and central North America; winters in the southern United States, Mexico, and Caribbean.
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
保护状况
Madagascar Teal
American Black Duck
How to Tell Them Apart
Madagascar Teal
Plain warm brown plumage with faint spotting; head slightly paler buff-brown. Orange-pink bill. Dull reddish-brown speculum. Orange legs. Sexes similar. Endangered Madagascar endemic; mangrove and coastal wetland specialist.
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 …
About These Birds
Madagascar Teal
马岛鸭（Anas bernieri）是一种小型褐色鸭，体羽具细密斑点，眼睛红色，具蓝绿色翼镜。特产于马达加斯加，属鸭科（Anatidae），是马达加斯加最濒危的水禽之一，受到栖息地丧失威胁。
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.