Lake Duck vs Blue-billed Teal
Oxyura vittata 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | Lake Duck | Blue-billed Teal |
|---|---|---|
| 学名 | Oxyura vittata | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 27.6 cm (10.9 in) | 29.4 cm (11.6 in) |
| 体重 | 665.0 g (23.46 oz) | 269.2 g (9.50 oz) |
| 食性 | Dives for aquatic invertebrates and plant seeds in South American freshwater lakes and marshes. Feeds … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 产卵数 | 3-5 | 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
Lake Duck
Male produces a mechanical, drumming staccato call; female gives a soft, nasal quack. Drumming display resembles other Oxyura stiff-tails; heard at dawn on Andean and Patagonian lakes.
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
Lake Duck
Resident in southern South America from central Chile and central Argentina south to Tierra del Fuego. Found on lowland lakes and lagoons.
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
Lake Duck
Blue-billed Teal
How to Tell Them Apart
Lake Duck
Male is dark chestnut-brown with black head, pale whitish-grey cheeks, and cobalt-blue bill. Female is brownish-buff with streaked upperparts and a distinctive pale supercilium; undertail coverts whitish.
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
Lake Duck
阿根廷硬尾鸭（湖硬尾鸭）是南美洲南部的小型硬尾鸭，分布于阿根廷、智利、乌拉圭和巴西南部。雄鸟体羽棕红色，头部黑色，嘴部灰蓝色，尾羽刚硬；雌鸟褐色，嘴黑色。栖息于湖泊、水库和沼泽，善深潜，以水生植物、种子和无脊椎动物为食。
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。