White-winged Scoter vs Blue-billed Teal
Melanitta deglandi 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | White-winged Scoter | Blue-billed Teal |
|---|---|---|
| 学名 | Melanitta deglandi | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 54.0 cm (21.3 in) | 29.4 cm (11.6 in) |
| 体重 | 1647.1666666666667 g (58.10 oz) | 269.2 g (9.50 oz) |
| 食性 | Dives for molluscs, crustaceans, and small fish in coastal and inland waters. Favours mussels and … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 产卵数 | 6-16 | 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
White-winged Scoter
Male produces a soft, whistled note; female gives a harsh, grating call. Similar to Velvet Scoter; the female's rasping call carries across North Pacific bays and coastal inlets.
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
White-winged Scoter
Breeds in boreal forest and tundra of interior North America. Winters along Pacific and Atlantic coasts south to California and the Gulf states.
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
White-winged Scoter
Blue-billed Teal
How to Tell Them Apart
White-winged Scoter
Male is black with conspicuous white secondaries and a white comma-shaped mark below eye; orange-yellow bill with black basal knob. Female dark brownish-black with two pale facial patches and white …
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
White-winged Scoter
白翅斑海番鸭是北美的大型黑色海鸭，雄鸟全身黑色，翼上具白色翼镜，眼下有白斑，嘴基肉瘤橙色。繁殖于加拿大西部和阿拉斯加的泰加林和苔原，越冬于北太平洋和大西洋沿岸。善深潜，以软体动物和甲壳类为食。常结大群在沿海越冬。
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。