African Black Duck vs Taiga Bean Goose
Anas sparsa 对比 Anser fabalis
Side-by-Side Comparison
| 属性 | African Black Duck | Taiga Bean Goose |
|---|---|---|
| 学名 | Anas sparsa | Anser fabalis |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 49.5 cm (19.5 in) | 89.7 cm (35.3 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 3115.0 g (109.88 oz) |
| 食性 | -- | -- |
| 产卵数 | 4-9 | 3-8 |
| Population Trend | — | — |
Habitat Comparison
African Black Duck
Fast-flowing rocky rivers and streams, mountain gorges, and waterfalls from sea level to 4,000 m across sub-Saharan Africa from Ethiopia and Kenya south to the Cape. Requires clear turbulent water with boulders.
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
African Black Duck
Produces a harsh, resonant quacking call; alarm is a loud, emphatic quack repeated rapidly. Both sexes call with strong quacking; pairs duet with synchronized calls along African rivers.
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.
保护状况
African Black Duck
Taiga Bean Goose
How to Tell Them Apart
African Black Duck
Dark blackish-brown plumage with bold white spots on back and scapulars. Iridescent blue-green speculum with white borders. Head dark with pale spots. Bill and legs dark gray. Sexes similar. Fast-flowing …
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 …
About These Birds
African Black Duck
A medium-sized dark brown duck with white spots on the back, a dark bill, and orange legs. Found along fast-flowing rocky rivers and streams in Africa. Territorial and monogamous; pairs defend stretches of river. Related to Pacific Black Duck.
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。