Brent Goose vs Puna Teal
Branta bernicla 比較対象 Spatula puna
Side-by-Side Comparison
| 属性 | Brent Goose | Puna Teal |
|---|---|---|
| 学名 | Branta bernicla | Spatula puna |
| 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) | 42.8 cm (16.9 in) |
| 体重 | 1335.0 g (47.09 oz) | 507.75 g (17.91 oz) |
| 食性 | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … | Eats seeds and aquatic invertebrates; dabbles in shallow freshwater; diet more invertebrate-heavy in spring breeding … |
| 一腹卵数 | 1-10 | 5-6 |
| 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.
Puna Teal
High-altitude lakes, salars, and marshy bogs on the puna and altiplano at 3,500–5,000 m in Peru, Bolivia, Chile, and northwestern Argentina. Associated with brackish and freshwater high-altitude wetlands.
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.
Puna Teal
Male gives a clear, high whistle; female responds with a soft, descending quack. The clean whistled note carries distinctly across high-altitude Andean wetlands and salt lakes.
Geographic Range & Migration
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
Puna Teal
Breeds in sub-Arctic and boreal Eurasia; winters on temperate coastlines and large lakes of Europe and Asia.
保全状況
Brent Goose
Puna Teal
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.
Puna Teal
Pale gray body finely vermiculated. Black cap extending to nape contrasting with white face and throat. Bright pale blue bill. Blue forewing patch in flight; green speculum. Sexes similar. High …
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。
Puna Teal
A medium-sized pale grey teal with a distinctive blue-grey bill, dark cap, and black-and-white back pattern. Restricted to high Andean wetlands. Found in large flocks on puna lakes and salars. Closely related to Silver Teal; sometimes treated as conspecific.