Bar-headed Goose vs Blue-billed Teal
Anser indicus 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | Bar-headed Goose | Blue-billed Teal |
|---|---|---|
| 学名 | Anser indicus | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 87.6 cm (34.5 in) | 29.4 cm (11.6 in) |
| 体重 | 2288.0 g (80.71 oz) | 269.2 g (9.50 oz) |
| 食性 | Eats aquatic plants, grasses, and roots; filters invertebrates during breeding; forms large flocks on shallow … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 产卵数 | 3-8 | 5-12 |
| Population Trend | — | — |
Habitat Comparison
Bar-headed Goose
Breeds on high-altitude lakes and rivers at 4,000–5,000 m in Central Asia (Tibet, Mongolia, Ladakh). Migrates over the Himalayas. Winters on rivers, lakes, and agricultural fields in the Indian subcontinent.
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
Bar-headed Goose
A nasal, goose-like honking 'wang-wang-wang'. Flocks give persistent calling during high-altitude Himalayan migration — among the highest migrations of any bird species.
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
Bar-headed Goose
Breeds in high Arctic of Greenland, Canada, and Alaska; winters on rocky coasts of eastern North America and western Europe.
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
Bar-headed Goose
Blue-billed Teal
How to Tell Them Apart
Bar-headed Goose
White head with two distinctive black bars across crown. Yellow-orange bill and legs. Back and wings pale gray; underparts white. Black-tipped primaries. Sexes similar; famed for Himalayan migration.
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
Bar-headed Goose
斑头雁以其高空迁徙能力著称，能飞越喜马拉雅山脉，是飞行高度最高的鸟类之一。繁殖于中亚高原湖泊，越冬于印度次大陆。头顶具两道黑色横纹，颈侧有白色条纹，体羽灰白色。以水草和湿地植物为食，常在高海拔湖泊集群繁殖。
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。