African Black Duck vs Bar-headed Goose
Anas sparsa 비교 대상 Anser indicus
Side-by-Side Comparison
| 속성 | African Black Duck | Bar-headed Goose |
|---|---|---|
| 학명 | Anas sparsa | Anser indicus |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 49.5 cm (19.5 in) | 87.6 cm (34.5 in) |
| 체중 | 996.8333333333334 g (35.16 oz) | 2288.0 g (80.71 oz) |
| 식성 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … | Eats aquatic plants, grasses, and roots; filters invertebrates during breeding; forms large flocks on shallow … |
| 산란 수 | 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.
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.
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.
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.
Geographic Range & Migration
African Black Duck
Resident across South and Southeast Asia, from India to southern China and the Philippines. Non-migratory in most of its range.
Bar-headed Goose
Breeds in high Arctic of Greenland, Canada, and Alaska; winters on rocky coasts of eastern North America and western Europe.
보전 상태
African Black Duck
Bar-headed 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 …
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.
About These Birds
African Black Duck
아프리카 검정 오리는 사하라 이남 아프리카의 산간 하천과 개울에 서식하는 중간 크기의 오리입니다. 어두운 갈색 깃털과 흰색 반점이 특징이며, 빠르게 흐르는 물에 적응되어 있습니다.
Bar-headed Goose
바 머리 기러기는 중앙아시아와 히말라야 호수에서 번식하고 인도 아대륙에서 월동합니다. 히말라야를 넘어 이주하는 것으로 유명하며, 머리의 두 검은 줄무늬와 흰 머리가 특징입니다.