Common Scoter vs Blue-billed Teal
Melanitta nigra 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | Common Scoter | Blue-billed Teal |
|---|---|---|
| 学名 | Melanitta nigra | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 44.2 cm (17.4 in) | 29.4 cm (11.6 in) |
| 体重 | 1127.25 g (39.76 oz) | 269.2 g (9.50 oz) |
| 食性 | Dives for bivalves, especially cockles, mussels, and clams, in shallow coastal seas. Also eats crustaceans … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 产卵数 | 6-8 | 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
Common Scoter
Male gives a soft, piping whistle; female produces a harsh, rasping call. The male's piping whistle is subtle; female's harsh calls dominate on European winter coasts and estuaries.
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
Common Scoter
Breeds on moorland and boreal tundra from Iceland and Britain east to western Siberia. Winters on northwestern European coasts and the Baltic 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
Common Scoter
Blue-billed Teal
How to Tell Them Apart
Common Scoter
Male is entirely sooty black without white markings; orange-yellow patch on upper bill with small black knob. Female brownish-black above with contrasting pale cream cheeks and throat.
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
Common Scoter
黑海番鸭是欧亚大陆的黑色海鸭，雄鸟全身黑色，仅嘴基具明亮的橙黄色斑块；雌鸟褐色，脸颊浅色。繁殖于苏格兰、斯堪的纳维亚和西伯利亚北部，越冬于西欧和北非大西洋沿岸。善潜水，以软体动物和甲壳类为食，常在近岸浅海越冬。
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。