African Black Duck vs Hooded Merganser
Anas sparsa 比較対象 Lophodytes cucullatus
Side-by-Side Comparison
| 属性 | African Black Duck | Hooded Merganser |
|---|---|---|
| 学名 | Anas sparsa | Lophodytes cucullatus |
| 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) | 37.3 cm (14.7 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 638.0 g (22.50 oz) |
| 食性 | -- | Dives for small fish, aquatic invertebrates, and frogs in clear freshwater streams and ponds. Uses … |
| 一腹卵数 | 4-9 | 6-18 |
| 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.
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.
Hooded Merganser
Male produces a low, rolling rolling-tum tumbling call; female gives a harsh, grating quack. The male's frog-like rolling call is unique among North American ducks during winter courtship.
Geographic Range & Migration
African Black Duck
Hooded Merganser
Breeds in forested wetlands of North America from southern Canada to the northern United States. Winters on rivers and lakes south to Mexico.
保全状況
African Black Duck
Hooded Merganser
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 …
Hooded Merganser
Male has fan-shaped black-and-white erectile crest; black head and neck, white breast with two black bars, rich cinnamon flanks. Female is greyish-brown with rusty-cinnamon crest, paler below.
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。
Hooded Merganser
フードマーガンサーは北米の森林に繁殖する小型の潜水性カモです。雄の大きな扇形の白い冠羽が最大の特徴で、黒と白の羽毛が美しいです。森林の池や川に生息し、魚、甲殻類、水生昆虫を潜って採食します。木の洞に営巣します。