Black Swan vs Eurasian Wigeon
Cygnus atratus เปรียบเทียบกับ Mareca penelope
Side-by-Side Comparison
| คุณสมบัติ | Black Swan | Eurasian Wigeon |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Cygnus atratus | Mareca penelope |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | 130.0 cm (51.2 in) | — |
| กว้างปีก | 190.0 cm (74.8 in) | 50.1 cm (19.7 in) |
| น้ำหนัก | 6200.0 g (218.70 oz) | 783.75 g (27.65 oz) |
| อาหาร | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Feeds on seeds, aquatic plants, and invertebrates in shallow ponds; broadly omnivorous and seasonally variable. |
| จำนวนไข่ | 4-6 | 6-12 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Eurasian Wigeon
Breeds on boreal and subarctic lakes and bogs across Eurasia from Iceland east to Siberia. Winters in huge numbers on estuaries, lakes, and coastal grasslands in western Europe and South and Southeast Asia.
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.
Eurasian Wigeon
Male produces a clear, ringing whee-oo whistle; female gives a low, guttural purr. The male's bright, piping call is the classic sound of European winter estuaries and flocks.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Eurasian Wigeon
Resident in New Zealand's main islands and some offshore islands. Non-migratory; inhabits rivers, lakes, and estuaries.
สถานะการอนุรักษ์
Black Swan
Eurasian Wigeon
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
Eurasian Wigeon
Males have chestnut head with creamy-yellow forehead blaze; pink-buff breast; gray flanks; white belly. White forewing patch conspicuous in flight. Females rufous-brown. Compact with small bill. Dimorphic.
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.
Eurasian Wigeon
A medium-sized compact duck. Males have a chestnut head with creamy-yellow forehead blaze, pink breast, grey body, and white wing patch. Highly migratory; one of Europe's most abundant wintering ducks. Grazes on short grass and aquatic vegetation.