Brent Goose vs Muscovy Duck
Branta bernicla 比較対象 Cairina moschata
Side-by-Side Comparison
| 属性 | Brent Goose | Muscovy Duck |
|---|---|---|
| 学名 | Branta bernicla | Cairina moschata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 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 … | -- |
| 一腹卵数 | 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
保全状況
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
北極圏で繁殖し、北半球の海岸で越冬する小型のガン（体長55〜66cm）。黒い頭・首・胸に短い白い首輪が特徴。Branta bernicla（コクガン）は主にアマモなどの海草を食べ、干潟や浅い入り江を好む。日本でも北海道・東北の海岸で越冬する姿が見られ、個体数は比較的少ない。Anatidae科。
Muscovy Duck
バリケンはメキシコから南米にかけて分布する大型のカモです。雄は顔の赤い肉垂が特徴的です。家禽として世界中で飼育されており、熱帯の湿地、川、沼地に生息します。木の洞に営巣し、草、種子、昆虫を採食します。