African Black Duck vs Goosander
Anas sparsa 对比 Mergus merganser
Side-by-Side Comparison
| 属性 | African Black Duck | Goosander |
|---|---|---|
| 学名 | Anas sparsa | Mergus merganser |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 49.5 cm (19.5 in) | 54.2 cm (21.3 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 1488.0 g (52.49 oz) |
| 食性 | -- | Dives for fish, especially salmon and trout, in rivers and lakes. Also takes frogs, crustaceans, … |
| 产卵数 | 4-9 | 4-22 |
| 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.
Goosander
Male gives a harsh, crow-like karrr call; female produces a guttural, grunting series. Both sexes produce loud, nasal calls; the male's harsh croaking is a distinctive winter river sound.
Geographic Range & Migration
African Black Duck
Goosander
Breeds across boreal forests of North America, Europe, and Asia. Winters on coasts and large rivers south to the Mediterranean and South Asia.
保护状况
African Black Duck
Goosander
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 …
Goosander
Male has dark green iridescent head, salmon-pink suffused white body, and black back; red serrated bill. Female has rufous-brown head with neat white chin patch, grey body, and pinkish-buff breast.
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.
Goosander
普通秋沙鸭是最大的秋沙鸭，雄鸟头部深绿色有光泽，体羽白色染粉红，嘴和腿橙红色，细长有锯齿；雌鸟头部棕褐色，有冠羽，上身灰色。广泛繁殖于欧亚和北美北部，越冬于温带内陆和沿海水域。以鱼类为主食，是高效的潜水捕鱼者，在树洞中营巢。