Harlequin Duck vs Blue-billed Teal
Histrionicus histrionicus 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | Harlequin Duck | Blue-billed Teal |
|---|---|---|
| 学名 | Histrionicus histrionicus | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 38.8 cm (15.3 in) | 29.4 cm (11.6 in) |
| 体重 | 553.0 g (19.51 oz) | 269.2 g (9.50 oz) |
| 食性 | Forages in fast-flowing streams for aquatic insect larvae, amphipods, and small fish. Dives and clings … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 产卵数 | 3-9 | 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
Harlequin Duck
Male gives a squeaky, mouse-like squeal; female produces a guttural, grunting call. The male's bizarre, high-pitched squealing call is completely unexpected in such a compact seaduck.
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
Harlequin Duck
Breeds on fast-flowing rivers in Iceland, Greenland, and northern North America. Winters along rocky Pacific and Atlantic coasts south to California.
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
Harlequin Duck
Blue-billed Teal
How to Tell Them Apart
Harlequin Duck
Male is slate-blue with bold white crescent before eye, white spots and streaks on head, neck, and scapulars, and rich chestnut flanks. Female is dark sooty-brown with three white facial …
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
Harlequin Duck
丑鸭是北半球湍急山涧和急流中的特有潜水鸭。雄鸟羽色华丽，体具白色斑点和条纹，红褐色侧腹。繁殖于北美和亚洲北部的山地河流，在沿海越冬。善于在急流中游泳和潜水捕食水生无脊椎动物。
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。