African Black Duck vs Lesser Whistling-duck
Anas sparsa 比較対象 Dendrocygna javanica
Side-by-Side Comparison
| 属性 | African Black Duck | Lesser Whistling-duck |
|---|---|---|
| 学名 | Anas sparsa | Dendrocygna javanica |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 49.5 cm (19.5 in) | 38.8 cm (15.3 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 525.0 g (18.52 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 4-9 | 7-17 |
| 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 Whistling-duck
Freshwater wetlands, lakes, rice paddies, mangroves, and slow rivers across South and Southeast Asia from India through southern China to Borneo and Indonesia. Common near cultivated land and human settlements.
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 Whistling-duck
A softer, higher-pitched whistle than other Dendrocygna. Call is a quick 'we-we' given in flight. Smaller size reflected in higher-pitched and thinner quality of call.
保全状況
African Black Duck
Lesser Whistling-duck
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 Whistling-duck
Warm chestnut-brown overall; head and neck brown; upperparts dark brown. Chestnut rump and upper-tail conspicuous in flight. Flanks chestnut with pale streaks. Bill and legs dark gray. Sexes similar.
About These Birds
African Black Duck
アフリカンブラックダックはサハラ以南のアフリカの急流河川に生息する特殊なカモです。暗褐色の羽毛と白い斑点が特徴で、水流の速い清澄な渓流を好みます。繁殖期には縄張り意識が強く、ペアで生活します。急流の水生昆虫や甲殻類を主食とします。
Lesser Whistling-duck
レッサーウィスリングダックは南アジアから東南アジアにかけて分布するツリーダックです。褐色の羽毛と特徴的な鳴き声を持ちます。稲田、湿地、マングローブ林に生息し、水草の種子や葉を採食します。アジアで最もよく見られるツリーダックです。