Taiga Bean Goose vs Black-headed Duck
Anser fabalis 对比 Heteronetta atricapilla
Side-by-Side Comparison
| 属性 | Taiga Bean Goose | Black-headed Duck |
|---|---|---|
| 学名 | Anser fabalis | Heteronetta atricapilla |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 89.7 cm (35.3 in) | 34.7 cm (13.7 in) |
| 体重 | 3115.0 g (109.88 oz) | 528.5 g (18.64 oz) |
| 食性 | Eats seeds, aquatic plants, and invertebrates; forages in shallow water and on land; diet varies … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| 产卵数 | 3-8 | 2 |
| Population Trend | — | — |
Habitat Comparison
Taiga Bean Goose
Breeds in taiga forest, boggy clearings, and river valleys across Scandinavia and northern Russia. Winters on agricultural fields, pastures, and river valleys in western and central Europe, particularly Belgium and the Netherlands.
Song & Call Comparison
Taiga Bean Goose
A low, nasal 'ung-unk' or 'ow' call — less nasal than Grey-lag. Flocks give continuous calling. The call distinction from Tundra Bean Goose is subtle but detectable.
Black-headed Duck
Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.
Geographic Range & Migration
Taiga Bean Goose
Breeds across Alaska and Canada; winters in the US interior and along coastlines south to the Gulf of Mexico.
Black-headed Duck
Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.
保护状况
Taiga Bean Goose
Black-headed Duck
How to Tell Them Apart
Taiga Bean Goose
Dark brown head and neck; back dark brown with pale feather edges giving scalloped appearance. Underparts pale gray-brown. Bill orange-yellow with black base and tip. Orange legs. Darker than Pink-footed …
Black-headed Duck
Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.
About These Birds
Taiga Bean Goose
豆雁因常在农田觅食豆类和谷物而得名，繁殖于欧亚大陆北部苔原和针叶林带，越冬于西欧、东亚。体型与灰雁相近，但嘴部具黑色和橙色相间的斑纹，腿部橙黄色。迁徙时结大群飞行，常在农田、草地及湖岸觅食。
Black-headed Duck
黑头鸭是南美洲的寄生性鸭子，不自己筑巢，而将卵产于其他水鸟（包括其他鸭类、䴙䴘、红鹭等）的巢中，由寄主孵化并抚育。分布于阿根廷、乌拉圭、智利和巴西南部。雄鸟头部黑色，体羽深褐色；雌鸟头部褐色。是唯一真正的全职巢寄生鸭类。