Snow Goose vs Black Swan
Anser caerulescens 对比 Cygnus atratus
Side-by-Side Comparison
| 属性 | Snow Goose | Black Swan |
|---|---|---|
| 学名 | Anser caerulescens | Cygnus atratus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | 130.0 cm (51.2 in) |
| 翼展 | 82.4 cm (32.4 in) | 190.0 cm (74.8 in) |
| 体重 | 2561.0 g (90.34 oz) | 6200.0 g (218.70 oz) |
| 食性 | Grazes submerged aquatic vegetation and eelgrass in estuaries; also takes grasses and sedges on coastal … | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … |
| 产卵数 | 2-6 | 4-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Snow Goose
Breeds on coastal and inland Arctic tundra in Canada, Alaska, and Greenland. Winters on agricultural fields, marshes, and coastal wetlands across the United States and northern Mexico. Forms enormous flocks.
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Snow Goose
A loud, nasal barking 'luk-luk' or 'kow-kow'. Large flocks create enormous noise during Arctic nesting and winter staging. Considered a noisy, conspicuous goose.
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.
Geographic Range & Migration
Snow Goose
Breeds in eastern North America's boreal forest; winters on the Atlantic coast from New England to South Carolina.
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
保护状况
Snow Goose
Black Swan
How to Tell Them Apart
Snow Goose
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
About These Birds
Snow Goose
雪雁是北美数量最多的雁类之一，繁殖于加拿大北极苔原，越冬于美国南部及墨西哥湾沿岸。有白色和蓝色两种色型，白色型全身白色，翼尖黑色；蓝色型身体灰褐色，头颈白色。迁徙时常形成壮观的数十万只大群，以草地和农田植物为食。
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.