Black Swan vs Bufflehead
Cygnus atratus 对比 Bucephala albeola
Side-by-Side Comparison
| 属性 | Black Swan | Bufflehead |
|---|---|---|
| 学名 | Cygnus atratus | Bucephala albeola |
| 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) | 32.2 cm (12.7 in) |
| 体重 | 6200.0 g (218.70 oz) | 400.5 g (14.13 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Dives for aquatic insects, crustaceans, and small molluscs in freshwater and coastal habitats. One of … |
| 产卵数 | 4-6 | 5-14 |
| 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.
Bufflehead
Male produces a soft, squeaky whistle; female gives a harsh, nasal quack. The male's thin, reedy whistle is barely audible; pairs exchange quiet contact calls at boreal forest ponds.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Bufflehead
Breeds in boreal forest of western and central North America. Winters along both coasts and interior lakes from southern Canada south to Mexico.
保护状况
Black Swan
Bufflehead
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
Bufflehead
Male has iridescent green-purple head with a large triangular white patch from behind eye over crown; body clean white except for black back. Female is dark sooty-brown with a single …
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.
Bufflehead
白枕鹊鸭是北美最小的潜鸭之一，雄鸟头部黑绿色有光泽，枕部具大型白斑，体羽黑白分明；雌鸟褐色，脸侧有白斑。繁殖于加拿大和阿拉斯加的针叶林湖泊，在啄木鸟挖凿的树洞中营巢。越冬于沿海海湾和内陆水库，以水生昆虫和无脊椎动物为食。