Musk Duck vs Brent Goose
Biziura lobata 比較対象 Branta bernicla
Side-by-Side Comparison
| 属性 | Musk Duck | Brent Goose |
|---|---|---|
| 学名 | Biziura lobata | Branta bernicla |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 42.3 cm (16.7 in) | 63.9 cm (25.2 in) |
| 体重 | 1930.75 g (68.11 oz) | 1335.0 g (47.09 oz) |
| 食性 | Dives for aquatic invertebrates, small fish, and plant material in Australian freshwater lakes. Highly aquatic; … | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … |
| 一腹卵数 | 2-3 | 1-10 |
| 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.
Song & Call Comparison
Musk Duck
Male produces a loud, explosive plonk call followed by bill-drumming on the water surface; female gives a harsh quack. The male's bizarre splashing display is unique and unmistakable among Australian …
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.
Geographic Range & Migration
Musk Duck
Endemic to southern Australia, including southeastern and southwestern regions. Found on wetlands with lignum and reeds.
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
保全状況
Musk Duck
Brent Goose
How to Tell Them Apart
Musk Duck
Both sexes are uniformly dark sooty-brown, densely barred and vermiculated with black; male has distinctive pendulous black lobe hanging below bill. Females and immatures are smaller and lack the lobe.
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.
About These Birds
Musk Duck
マスクドダックはオーストラリアに固有の大型の潜水性カモです。雄は嘴の下の大きな肉垂と独特の鼻から出る麝香の臭いが特徴です。深い葦原に覆われた湖や沼地に生息し、水生無脊椎動物や水草を潜って採食します。オーストラリア固有の奇妙なカモとして知られています。
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。