Black Swan vs Kelp Goose
Cygnus atratus 对比 Chloephaga hybrida
Side-by-Side Comparison
| 属性 | Black Swan | Kelp Goose |
|---|---|---|
| 学名 | Cygnus atratus | Chloephaga hybrida |
| 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) | 71.6 cm (28.2 in) |
| 体重 | 6200.0 g (218.70 oz) | 2735.0 g (96.47 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | -- |
| 产卵数 | 4-6 | 3-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Kelp Goose
Rocky wave-washed shores, sea channels, and kelp-fringed coasts of Patagonian Chile and Argentina south to Tierra del Fuego, and the Falkland Islands. Strictly coastal; almost never moves inland.
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.
Kelp Goose
A loud, nasal 'honk'. Male is mostly white and gives sharper calls; female is dark and gives softer, lower honks. Coastal Patagonian and Falklands habitat; highly vocal.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Kelp Goose
保护状况
Black Swan
Kelp Goose
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
Kelp Goose
Extreme dimorphism. Males entirely white with yellow bill and legs. Females dark brown barred white overall; yellow legs. Coastal species of rocky shores. Sexes so different they were once considered …
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.
Kelp Goose
洛岛雁是分布于南美洲南端麦哲伦地区及福克兰群岛的沿海雁类。体型中等，雄鸟头颈白色，体羽灰白色；雌鸟褐色带黑色横纹。主要栖息于岩质海岸，以潮间带海藻和草地植物为食。该物种有两个亚种，福克兰群岛亚种数量较多且相对稳定。