Black Swan vs Garganey
Cygnus atratus 对比 Spatula querquedula
Side-by-Side Comparison
| 属性 | Black Swan | Garganey |
|---|---|---|
| 学名 | Cygnus atratus | Spatula querquedula |
| 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) | 37.6 cm (14.8 in) |
| 体重 | 6200.0 g (218.70 oz) | 401.25 g (14.15 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Eats seeds, plant matter, and aquatic invertebrates; dabbles in shallow wetlands; diet shifts toward invertebrates … |
| 产卵数 | 4-6 | 6-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Garganey
Breeds on freshwater marshes, flooded meadows, and lake margins in Eurasia from Europe east to Siberia. Winters across sub-Saharan Africa, the Indian subcontinent, and Southeast Asia in wetlands of all kinds.
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.
Garganey
Male produces a distinctive mechanical rattle or craking sound; female gives a subdued quack. The rattling male call is unlike any other teal and immediately diagnostic.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Garganey
Breeds across the Palearctic; winters from western Europe and North Africa east through South Asia to Southeast Asia.
保护状况
Black Swan
Garganey
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
Garganey
Breeding males have chocolate-brown head with sweeping white supercilium. Blue-gray forewing; green speculum with white border. Gray flanks with white vermiculations. Females brown with white loral stripe.
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.
Garganey
白眉鸭是欧亚大陆常见的小型水面鸭，以雄鸟宽阔的白色眉纹为特征，体羽棕灰色，翼镜绿色。繁殖于欧洲和亚洲温带地区，越冬于非洲、印度和东南亚，是长途迁徙鸟类。栖息于草原和湿地，以水生植物和无脊椎动物为食，迁徙期间常在稻田集群。