King Eider vs Blue-billed Teal
Somateria spectabilis 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | King Eider | Blue-billed Teal |
|---|---|---|
| 学名 | Somateria spectabilis | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 53.3 cm (21.0 in) | 29.4 cm (11.6 in) |
| 体重 | 1507.5 g (53.18 oz) | 269.2 g (9.50 oz) |
| 食性 | Dives for sea urchins, molluscs, and crustaceans in Arctic coastal waters. Shifts to freshwater invertebrates … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 产卵数 | 1-16 | 5-12 |
| Population Trend | — | — |
Habitat Comparison
Blue-billed Teal
Freshwater lakes, marshes, pans, and flooded grasslands across sub-Saharan Africa from Senegal and Sudan south to the Cape. Nomadic; follows seasonal rains. Common but easily overlooked among reed beds.
Song & Call Comparison
King Eider
Male produces a melodious, ascending ooo-wuh cooing; female gives a guttural grunt. The male's haunting, dove-like call is one of the most atmospheric sounds of the High Arctic in spring.
Blue-billed Teal
Male utters a soft, teal-like peep; female gives a muted quack. Pairs call quietly in dense papyrus; soft contact calls help birds maintain proximity in thick African marsh vegetation.
Geographic Range & Migration
King Eider
Circumpolar High Arctic breeder in North America, Greenland, Svalbard, and Russia. Winters at sea in the North Atlantic and Bering Sea.
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
保护状况
King Eider
Blue-billed Teal
How to Tell Them Apart
King Eider
Male has bluish-grey crown, pale greenish cheeks, vivid orange-red frontal shield, black back and wings, and white breast patch. Female is warm rufous-brown with dark crescentic barring throughout.
Blue-billed Teal
Small; males have pale blue-gray bill contrasting with brown-gray body. Head finely spotted; underparts barred brown and white. Males show powder-blue forewing in flight. Females browner. African marsh species.
About These Birds
King Eider
王绒鸭是北极的大型海鸭，雄鸟嘴基有橙红色大肉瘤，头部具复杂的白色、蓝色和绿色图案，体羽黑白相间，极为华丽；雌鸟棕褐色。繁殖于北极苔原，越冬于阿拉斯加和加拿大北部沿海。善深潜，以贻贝和甲壳类为食，常结大群在北极海面越冬。
Blue-billed Teal
霍屯都鸭是非洲的一种小型水面鸭，以南非土著霍屯都人命名，主要分布于撒哈拉以南非洲东部和南部。体型小，雄鸟头颈部蓝灰色，体羽棕褐色有细纹；雌鸟褐色。栖息于淡水湖泊、沼泽和湿地，以水生植物和无脊椎动物为食。