Black Swan vs Maccoa Duck
Cygnus atratus 对比 Oxyura maccoa
Side-by-Side Comparison
| 属性 | Black Swan | Maccoa Duck |
|---|---|---|
| 学名 | Cygnus atratus | Oxyura maccoa |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Endangered |
| 体长 | 130.0 cm (51.2 in) | — |
| 翼展 | 190.0 cm (74.8 in) | 31.3 cm (12.3 in) |
| 体重 | 6200.0 g (218.70 oz) | 685.3333333333334 g (24.17 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Dives for aquatic invertebrates and plant seeds in African lakes and marshes. Uses lobed feet … |
| 产卵数 | 4-6 | 4-12 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Black Swan
Gives a musical bugling 'boo-boo-boo' in flight and softer honking on water. Less vocal than Mute Swan; produces a baying call when alarmed. Wings whistle softly in flight.
Maccoa Duck
Male emits a rapid, staccato drumming display; female gives a harsh, emphatic quack. The drumming call is powerful and diagnostic; this endangered southern African stiff-tail displays at dawn.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Maccoa Duck
Resident in eastern and southern Africa from Ethiopia and Kenya south to the Cape. Found on lakes and marshes with dense aquatic vegetation.
保护状况
Black Swan
Maccoa Duck
How to Tell Them Apart
Black Swan
Almost entirely black with white flight feathers visible in flight. Red bill with a white band near the tip. Dark red to reddish-brown iris.
Bright red bill with a pale tip and prominent white band
Maccoa Duck
Male has glossy black head, deep chestnut-red body, and vivid sky-blue bill; stiff tail often cocked. Female is dark brown above with streaked buff below and two pale facial stripes …
About These Birds
Black Swan
The black swan was once considered impossible by Europeans who believed all swans were white, making it a famous philosophical example of inductive reasoning failure. It is the state emblem of Western Australia. Black swans form lifelong pair bonds and both parents share in incubation and care of cygnets.
Maccoa Duck
马科硬尾鸭是非洲东部和南部的小型硬尾鸭，主要分布于肯尼亚、坦桑尼亚、津巴布韦和南非。雄鸟繁殖羽体羽棕红色，头部黑色，嘴部亮蓝色，尾羽刚硬竖起；雌鸟褐色。栖息于富营养化的浅水湖泊和大型沼泽，以水生植物和无脊椎动物为食，被列为易危物种。