Brent Goose vs Cape Shoveler
Branta bernicla 比較対象 Spatula smithii
Side-by-Side Comparison
| 属性 | Brent Goose | Cape Shoveler |
|---|---|---|
| 学名 | Branta bernicla | Spatula smithii |
| 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) | 45.8 cm (18.0 in) |
| 体重 | 1335.0 g (47.09 oz) | 629.75 g (22.21 oz) |
| 食性 | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … | Eats seeds, plant matter, and aquatic invertebrates; dabbles in shallow ponds; diet more invertebrate-rich in … |
| 一腹卵数 | 1-10 | 5-12 |
| 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.
Cape Shoveler
Freshwater and saline lakes, estuaries, and wetlands across southern Africa from Zimbabwe south to the Cape. Most common on the Western Cape. Tolerates saline habitats better than most ducks.
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.
Cape Shoveler
Male utters a low, grunting tok note; female produces a series of soft quacks. Pairs vocalize quietly at Cape wetlands; female's quacking call is louder and more emphatic than male's.
Geographic Range & Migration
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
Cape Shoveler
Breeds in sub-Arctic wetlands of Eurasia; winters on lakes and reservoirs from western Europe to eastern China and Japan.
保全状況
Brent Goose
Cape Shoveler
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.
Cape Shoveler
Dull olive-brown body mottled dark; males slightly paler with yellow-orange eye. Pale blue-gray forewing and green speculum in flight. Long spatulate bill dark. Orange-yellow legs. Sexes similar. South African endemic.
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。
Cape Shoveler
A medium-sized shoveler with a characteristic large spatula-shaped bill. Males have yellow-orange eyes, brown head, and spotted brownish body; females are mottled brown. Endemic to southern Africa. Found mainly on the Western Cape's lakes and saline pans.