Black Scoter vs Mute Swan
Melanitta americana 对比 Cygnus olor
Side-by-Side Comparison
| 属性 | Black Scoter | Mute Swan |
|---|---|---|
| 学名 | Melanitta americana | Cygnus olor |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Near Threatened | Least Concern |
| 体长 | — | 152.0 cm (59.8 in) |
| 翼展 | 44.0 cm (17.3 in) | 235.0 cm (92.5 in) |
| 体重 | 1046.1 g (36.90 oz) | 11000.0 g (388.01 oz) |
| 食性 | Dives for molluscs, particularly mussels and clams, in coastal waters. Takes aquatic insects and plant … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| 产卵数 | 5-11 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Black Scoter
Male produces a low, melodious whistle; female gives a harsh, grating call. Closely related to Common Scoter; voice very similar; heard on North American Pacific and Atlantic coasts in winter.
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound in flight.
Geographic Range & Migration
Black Scoter
Breeds in boreal forests and tundra of Alaska and northern Canada. Winters along Pacific and Atlantic coasts south to Baja California and Florida.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
保护状况
Black Scoter
Mute Swan
How to Tell Them Apart
Black Scoter
Male is pure glossy black throughout with a prominent bright orange-yellow knob at bill base. Female is dark sooty-brown with pale buff cheeks and foreneck contrasting with darker cap and …
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
About These Birds
Black Scoter
美洲黑海番鸭是北美的黑色海鸭，雄鸟全身黑色，嘴部具橙黄色斑块；雌鸟褐色，脸颊浅色。繁殖于阿拉斯加和加拿大北部湖泊，越冬于北太平洋和北大西洋沿岸。善深潜，主要以贻贝等软体动物为食。近年来北太平洋种群数量有所下降。
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.