Brent Goose vs Muscovy Duck
Branta bernicla 对比 Cairina moschata
Side-by-Side Comparison
| 属性 | Brent Goose | Muscovy Duck |
|---|---|---|
| 学名 | Branta bernicla | Cairina moschata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 63.9 cm (25.2 in) | 69.0 cm (27.2 in) |
| 体重 | 1335.0 g (47.09 oz) | 2140.0 g (75.49 oz) |
| 食性 | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … | -- |
| 产卵数 | 1-10 | 8-15 |
| Population Trend | — | — |
Habitat Comparison
Brent Goose
Breeds on high-Arctic tundra; winters on estuaries, coastal mudflats, saltmarshes, and sea-grass beds along Atlantic and Pacific coastlines. One of the most strictly coastal wintering geese.
Muscovy Duck
Tropical and subtropical lowland forest near rivers, lakes, mangroves, and wetlands from Mexico through Central America to Peru, Bolivia, and Uruguay. Common near forest-edge water. Feral populations worldwide.
Song & Call Comparison
Brent Goose
A low, guttural 'rronk' or 'ronk-ronk' from flocks. Soft nasal calls in feeding groups. A subtle, understated call for a goose — less loud than most Anser geese.
Muscovy Duck
Males are nearly silent; females give a raspy, low 'grrrr' hiss when threatened. Domesticated birds familiar worldwide but wild birds are surprisingly quiet and secretive.
Geographic Range & Migration
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
Muscovy Duck
保护状况
Brent Goose
Muscovy Duck
How to Tell Them Apart
Brent Goose
Small; mostly black head, neck, and breast. Small white neck-patch on adults. Back dark brownish-gray; belly pale gray to white depending on subspecies. White undertail coverts. Sexes similar.
Muscovy Duck
Glossy black plumage with large white wing patches. Bare red facial skin with warty caruncles, more extensive in males. Males larger; females less knobby-faced. Dark bill. Domestic forms vary widely …
About These Birds
Brent Goose
黑雁是小型海雁，繁殖于北极苔原，越冬于温带沿海地区。全身黑色，颈部有白色斑纹，腹部浅色或深色（因亚种而异）。以海草（大叶藻）和潮间带植物为食，高度依赖沿海湿地。在欧洲和北美分布有多个亚种，其中部分亚种数量因大叶藻减少而受到威胁。
Muscovy Duck
疣鼻栖鸭原产于中南美洲热带地区，是家番鸭（又称番鸭）的野生祖先。嘴基和眼周具红色疣状皮肤，体型大，雄鸟体重可达4千克。栖息于热带森林的河流和湖泊，在树洞中营巢。家养品种已遍布全球，野生种群因栖息地丧失和猎捕而数量减少。