Black Swan vs Flying Steamerduck
Cygnus atratus 对比 Tachyeres patachonicus
Side-by-Side Comparison
| 属性 | Black Swan | Flying Steamerduck |
|---|---|---|
| 学名 | Cygnus atratus | Tachyeres patachonicus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 130.0 cm (51.2 in) | — |
| 翼展 | 190.0 cm (74.8 in) | 57.4 cm (22.6 in) |
| 体重 | 6200.0 g (218.70 oz) | 2620.75 g (92.44 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Dabbles for seeds, invertebrates, and aquatic vegetation; widespread; diet varies from predominantly plant-based to invertebrate-rich. |
| 产卵数 | 4-6 | 5-9 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Flying Steamerduck
Freshwater lakes, rivers, coastal bays, and channels in Patagonian Chile and Argentina from the Lakes Region south to Tierra del Fuego. Partially migratory; some populations move to coasts in winter.
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.
Flying Steamerduck
A harsh, rattling 'rrrrr' and nasal calls. Flying Steamerduck can fly (unlike some relatives) and gives vocal calls in flight. Contact calls are clattering and guttural.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Flying Steamerduck
Breeds across the boreal and subarctic zone of North America; winters broadly across the southern United States and Mexico.
保护状况
Black Swan
Flying Steamerduck
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
Flying Steamerduck
Males gray with chestnut-brown breast and white eye-stripe. Females brown-gray with white eye-ring and chestnut flanks. Orange-yellow bill. Only Tachyeres species capable of sustained flight. Wings larger.
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.
Flying Steamerduck
可飞蒸汽鸭是南美洲唯一能够飞翔的蒸汽鸭，分布于智利和阿根廷南部的内陆湖泊和河流，部分种群也在沿海活动。体型比不会飞行的亲戚小，翅膀较长。雄鸟头部灰色，雌鸟头部棕褐色。以软体动物、甲壳类和水生昆虫为食。