African Black Duck vs Baer's Pochard
Anas sparsa 对比 Aythya baeri
Side-by-Side Comparison
| 属性 | African Black Duck | Baer's Pochard |
|---|---|---|
| 学名 | Anas sparsa | Aythya baeri |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Critically Endangered |
| 体长 | — | — |
| 翼展 | 49.5 cm (19.5 in) | 40.4 cm (15.9 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 707.25 g (24.95 oz) |
| 食性 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … | Dives for molluscs and aquatic invertebrates; diet dominated by hard-shelled benthic prey in coastal shallow-water … |
| 产卵数 | 4-9 | 6-13 |
| 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.
Baer's Pochard
Breeds on lakes and rivers in boreal forests of eastern Siberia and northeastern China. Winters on freshwater lakes and wetlands in eastern and southeastern Asia. Critically Endangered; tiny remaining 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.
Baer's Pochard
Male gives a low, grating wheeze; female produces a harsh quacking series. Calls resemble Tufted Duck but slightly softer; among the rarest duck calls in East Asia due to its …
Geographic Range & Migration
African Black Duck
Resident across South and Southeast Asia, from India to southern China and the Philippines. Non-migratory in most of its range.
Baer's Pochard
Breeds in Arctic Canada and Alaska; winters at sea off both US coasts and in the Great Lakes during migration.
保护状况
African Black Duck
Baer's 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 …
Baer's Pochard
Males have dark glossy greenish-black head; chestnut breast; white flanks and undertail. White eye. Females brown with chestnut breast and pale face patch. White wing stripe in flight. Critically endangered …
About These Birds
African Black Duck
A medium-sized dark brown duck with white spots on the back, a dark bill, and orange legs. Found along fast-flowing rocky rivers and streams in Africa. Territorial and monogamous; pairs defend stretches of river. Related to Pacific Black Duck.
Baer's Pochard
青头潜鸭是东亚特有的濒危潜鸭，繁殖于中国东北和西伯利亚东部，越冬于中国南部及东南亚。雄鸟头部绿黑色富有光泽，眼睛白色，胸部栗褐色；雌鸟褐色。由于湿地丧失和过度猎捕，种群数量已极度减少，被列为极危物种，估计野生数量不足1000只。