African Black Duck vs Taiga Bean Goose
Anas sparsa เปรียบเทียบกับ Anser fabalis
Side-by-Side Comparison
| คุณสมบัติ | African Black Duck | Taiga Bean Goose |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Anas sparsa | Anser fabalis |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 49.5 cm (19.5 in) | 89.7 cm (35.3 in) |
| น้ำหนัก | 996.8333333333334 g (35.16 oz) | 3115.0 g (109.88 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 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.
สถานะการอนุรักษ์
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
A large brown goose with dark head and neck, orange-and-black bill, and orange legs. One of two bean goose species. Breeds in Scandinavian and Russian taiga; winters in western and central Europe. Recognized as separate from Tundra Bean Goose since 2007.