African Black Duck vs Falcated Duck
Anas sparsa 比較対象 Mareca falcata
Side-by-Side Comparison
| 属性 | African Black Duck | Falcated Duck |
|---|---|---|
| 学名 | Anas sparsa | Mareca falcata |
| 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) | 47.7 cm (18.8 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 620.5 g (21.89 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.
Falcated Duck
Breeds along rivers and lake shores in Siberian taiga and meadows. Winters on freshwater lakes and rivers in China, Japan, and South Korea. Sensitive to hunting pressure and wetland drainage.
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.
Falcated Duck
Male gives a soft, whistled whi-ooo note; female produces a low, grunting quack. The male's haunting whistle is one of the more melodic sounds of East Asian wetlands in winter.
保全状況
African Black Duck
Falcated 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 …
Falcated Duck
Males have iridescent green-and-chestnut head with bushy drooping crest. Pale gray body with black and white breast band. Long, sickle-shaped tertials overhang tail. Females mottled brown. Spectacular dimorphism.
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。
Falcated Duck
ファルケーテッドダック。東アジアに生息するオカヨシガモの仲間。雄は緑がかった頭部と長く垂れ下がった三列風切羽が特徴的。体長46〜53cm。湖や川、湿地に生息。水草や種子を食べる。準絶滅危惧。