Tundra Bean Goose vs Blue-billed Teal
Anser serrirostris 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | Tundra Bean Goose | Blue-billed Teal |
|---|---|---|
| 学名 | Anser serrirostris | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Not Evaluated | Least Concern |
| 体长 | — | — |
| 翼展 | — | 29.4 cm (11.6 in) |
| 体重 | 2540.0 g (89.60 oz) | 269.2 g (9.50 oz) |
| 食性 | Eats grasses, seeds, and aquatic plants; dabbles for invertebrates; diet shifts between plant material and … | 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
Tundra Bean Goose
Breeds on Arctic and subarctic tundra in Siberia. Winters on agricultural land, river floodplains, and wetlands in eastern China, Japan, and Korea, with some wintering in western Europe.
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
Tundra Bean Goose
A nasal, lower call compared to Taiga Bean Goose. Considered subspecifically or specifically distinct; vocalizations are an active taxonomic tool for separation in mixed flocks.
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
Tundra Bean Goose
Breeds in northern prairie regions of North America; winters in the southern United States and along both coasts to Mexico.
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
Tundra Bean Goose
Blue-billed Teal
How to Tell Them Apart
Tundra Bean Goose
Dark brown head and neck; grayish-brown back with pale feather fringing. Underparts pale gray-brown. Orange-yellow legs. Bill black with orange subterminal band. Recently split from Taiga Bean Goose.
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
Tundra Bean Goose
短嘴豆雁原为豆雁的一个亚种，近年被提升为独立物种。繁殖于西伯利亚东北部苔原，越冬于日本、朝鲜半岛及中国东部沿海。外形与豆雁相似，但体型略小，嘴更短厚，以苔原植物和越冬地农田为食。
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。