Black Swan vs Eurasian Wigeon
Cygnus atratus 对比 Mareca penelope
Side-by-Side Comparison
| 属性 | Black Swan | Eurasian Wigeon |
|---|---|---|
| 学名 | Cygnus atratus | Mareca penelope |
| 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) | 50.1 cm (19.7 in) |
| 体重 | 6200.0 g (218.70 oz) | 783.75 g (27.65 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Feeds on seeds, aquatic plants, and invertebrates in shallow ponds; broadly omnivorous and seasonally variable. |
| 产卵数 | 4-6 | 6-12 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Eurasian Wigeon
Breeds on boreal and subarctic lakes and bogs across Eurasia from Iceland east to Siberia. Winters in huge numbers on estuaries, lakes, and coastal grasslands in western Europe and South and Southeast Asia.
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.
Eurasian Wigeon
Male produces a clear, ringing whee-oo whistle; female gives a low, guttural purr. The male's bright, piping call is the classic sound of European winter estuaries and flocks.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Eurasian Wigeon
Resident in New Zealand's main islands and some offshore islands. Non-migratory; inhabits rivers, lakes, and estuaries.
保护状况
Black Swan
Eurasian Wigeon
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
Eurasian Wigeon
Males have chestnut head with creamy-yellow forehead blaze; pink-buff breast; gray flanks; white belly. White forewing patch conspicuous in flight. Females rufous-brown. Compact with small bill. Dimorphic.
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.
Eurasian Wigeon
赤颈鸭是欧亚大陆常见的水面觅食鸭，雄鸟头部砖红色，额部乳白色，体侧灰色；雌鸟褐色。繁殖于欧亚北部湿地，越冬于西欧、地中海、中东和南亚。常在浅水湿地和草地觅食水生植物和草叶。是欧洲和亚洲最常见的越冬鸭类之一。