African Black Duck vs Madagascar Pochard
Anas sparsa 比較対象 Aythya innotata
Side-by-Side Comparison
| 属性 | African Black Duck | Madagascar Pochard |
|---|---|---|
| 学名 | Anas sparsa | Aythya innotata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Critically Endangered |
| 体長 | — | — |
| 翼開長 | 49.5 cm (19.5 in) | 37.4 cm (14.7 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 685.0 g (24.16 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 4-9 | 6-10 |
| 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.
Madagascar Pochard
Restricted to Lake Matsaborimena in the highlands of northern Madagascar at about 1,500 m altitude. Uses deep-water mountain lakes with aquatic vegetation. Critically Endangered; tiny wild population.
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.
Madagascar Pochard
Critically Endangered; produces a soft, Aythya-like purring and grating quacking. Calls are not well-documented; likely similar to closely related Ferruginous Duck based on phylogeny.
保全状況
African Black Duck
Madagascar Pochard
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 …
Madagascar Pochard
Males have brown head and neck; dark brown back; pale gray flanks with white undertail. White eye. Blue-gray bill. Females browner with pale face patch and brown eye. Critically endangered; …
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。
Madagascar Pochard
マダガスカルポチャードはマダガスカル固有の極めて希少な潜水性カモです。長年にわたり野生絶滅と考えられていましたが、2006年に北部の湖で再発見されました。深水の湖に生息し、水生植物を潜って採食します。現在は飼育繁殖プログラムで個体数回復が図られています。