Black Swan vs Black-bellied Whistling-duck
Cygnus atratus 비교 대상 Dendrocygna autumnalis
Side-by-Side Comparison
| 속성 | Black Swan | Black-bellied Whistling-duck |
|---|---|---|
| 학명 | Cygnus atratus | Dendrocygna autumnalis |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | 130.0 cm (51.2 in) | — |
| 날개 폭 | 190.0 cm (74.8 in) | 48.2 cm (19.0 in) |
| 체중 | 6200.0 g (218.70 oz) | 757.9 g (26.73 oz) |
| 식성 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes and agricultural fields eating … |
| 산란 수 | 4-6 | 9-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Black-bellied Whistling-duck
Freshwater wetlands, ponds, lake margins, flooded fields, and wooded swamps from the southern United States and Mexico through Central America to Ecuador, Bolivia, and Argentina. Uses nest boxes readily.
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.
Black-bellied Whistling-duck
A high, reedy whistle 'pe-che-che-ne' given in flight. Flocks produce a continuous whistling chorus. Also gives a squeaky 'whe-eee' contact call while swimming.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Black-bellied Whistling-duck
Inhabits freshwater marshes and riverbanks from southeastern Brazil to northern Argentina and Bolivia. Sedentary; locally common.
보전 상태
Black Swan
Black-bellied Whistling-duck
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
Black-bellied Whistling-duck
Gray head with brown cap and chestnut breast; black belly is distinctive. Wings show broad white patch in flight. Coral-pink bill and long pink legs. Upright posture. Sexes similar.
About These Birds
Black Swan
검은 백조는 한때 모든 백조가 흰색이라고 믿었던 유럽인들에게 불가능하다고 여겨졌으며, 귀납적 추론 실패의 유명한 철학적 예가 됩니다. 서부 오스트레일리아의 주 새입니다. 검은 백조는 평생 짝 유대를 형성하며 양 부모가 포란과 새끼 양육을 공유합니다.
Black-bellied Whistling-duck
밝은 붉은 부리, 밤색-검은색 몸통, 넓은 흰 날개 줄무늬, 특유의 휘파람 소리 울음을 가진 뚜렷한 무늬의 홍따오기. 미국 남부에서 남아메리카 중부까지 담수 습지에서 흔하다. 나무 구멍에 둥지를 튼다. 종종 나무에 횃대를 잡는데—물새로서는 이례적.