Black Swan vs Hawaiian Goose
Cygnus atratus 비교 대상 Branta sandvicensis
Side-by-Side Comparison
| 속성 | Black Swan | Hawaiian Goose |
|---|---|---|
| 학명 | Cygnus atratus | Branta sandvicensis |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Near Threatened |
| 체장 | 130.0 cm (51.2 in) | — |
| 날개 폭 | 190.0 cm (74.8 in) | 72.8 cm (28.7 in) |
| 체중 | 6200.0 g (218.70 oz) | 2150.0 g (75.84 oz) |
| 식성 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Eats aquatic plants, algae, and grasses; upends in shallow water to graze submerged vegetation; diet … |
| 산란 수 | 4-6 | 1-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Hawaiian Goose
Volcanic slopes, lava flows, coastal grasslands, and shrublands on Maui, Hawai'i, and Kauai. Adapted to rocky terrain with reduced toe webbing. Introduced to other Hawaiian islands. Avoids dense forest.
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.
Hawaiian Goose
A soft, low 'moo-moo' — the murmuring call gives the Nene its Hawaiian name. Also gives honking calls in flight. Less vocal than Canada Goose; distinctive murmuring quality.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Hawaiian Goose
Breeds in sub-Arctic Canada; winters on large lakes and rivers from the Gulf of Mexico north to where water remains open.
보전 상태
Black Swan
Hawaiian 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
Hawaiian Goose
Buff-tan neck with black and white channeled furrows. Crown and face black; hindneck black. Body gray-brown above; underparts pale with buff breast. Reduced webbing on feet. Sexes similar. State bird …
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.
Hawaiian Goose
하와이의 주 새이자 거의 멸종 직전에서 회복된 세계에서 가장 희귀한 기러기입니다. 검은 얼굴, 대각선 줄무늬가 있는 연한 황갈색 목, 용암을 걷기 위해 적응된 물갈퀴가 줄어든 발을 가진 중간 크기 갈색 기러기입니다. 화산 사면과 해안 지역에서 풀을 먹습니다.