African Black Duck vs Lesser White-fronted Goose
Anas sparsa 비교 대상 Anser erythropus
Side-by-Side Comparison
| 속성 | African Black Duck | Lesser White-fronted Goose |
|---|---|---|
| 학명 | Anas sparsa | Anser erythropus |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Vulnerable |
| 체장 | — | — |
| 날개 폭 | 49.5 cm (19.5 in) | 73.8 cm (29.1 in) |
| 체중 | 996.8333333333334 g (35.16 oz) | 1912.5 g (67.46 oz) |
| 식성 | -- | -- |
| 산란 수 | 4-9 | 2-8 |
| 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.
Lesser White-fronted Goose
Breeds on low-arctic and subarctic willow scrub and tundra across northern Eurasia. Winters on agricultural steppes and wetlands in Azerbaijan, Iran, Greece, and eastern Asia. Mixes with White-fronted Goose flocks.
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.
Lesser White-fronted Goose
A high-pitched, rapid 'yelp' — noticeably faster and higher than Greater White-fronted. VU status; its smaller size is reflected in higher-frequency calls.
보전 상태
African Black Duck
Lesser White-fronted 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 …
Lesser White-fronted Goose
Similar to but smaller than Greater White-fronted Goose; more extensive white forehead reaching above eyes. Distinctive yellow eye-ring. Dark brown-gray body with black belly bars. Pink bill; orange legs.
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.
Lesser White-fronted Goose
작은 흰이마기러기는 시베리아 툰드라에서 번식하고 카스피해 및 중국에서 월동합니다. 흰이마기러기와 유사하지만 더 작고 흰 이마 줄무늬가 더 넓으며 눈 주위의 노란 테두리가 특징입니다.