Black Swan vs White-winged Scoter
Cygnus atratus 对比 Melanitta deglandi
Side-by-Side Comparison
| 属性 | Black Swan | White-winged Scoter |
|---|---|---|
| 学名 | Cygnus atratus | Melanitta deglandi |
| 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) | 54.0 cm (21.3 in) |
| 体重 | 6200.0 g (218.70 oz) | 1647.1666666666667 g (58.10 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Dives for molluscs, crustaceans, and small fish in coastal and inland waters. Favours mussels and … |
| 产卵数 | 4-6 | 6-16 |
| 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.
White-winged Scoter
Male produces a soft, whistled note; female gives a harsh, grating call. Similar to Velvet Scoter; the female's rasping call carries across North Pacific bays and coastal inlets.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
White-winged Scoter
Breeds in boreal forest and tundra of interior North America. Winters along Pacific and Atlantic coasts south to California and the Gulf states.
保护状况
Black Swan
White-winged Scoter
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
White-winged Scoter
Male is black with conspicuous white secondaries and a white comma-shaped mark below eye; orange-yellow bill with black basal knob. Female dark brownish-black with two pale facial patches and white …
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.
White-winged Scoter
白翅斑海番鸭是北美的大型黑色海鸭，雄鸟全身黑色，翼上具白色翼镜，眼下有白斑，嘴基肉瘤橙色。繁殖于加拿大西部和阿拉斯加的泰加林和苔原，越冬于北太平洋和大西洋沿岸。善深潜，以软体动物和甲壳类为食。常结大群在沿海越冬。