Ring-necked Duck vs Black Swan
Aythya collaris 비교 대상 Cygnus atratus
Side-by-Side Comparison
| 속성 | Ring-necked Duck | Black Swan |
|---|---|---|
| 학명 | Aythya collaris | Cygnus atratus |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | 130.0 cm (51.2 in) |
| 날개 폭 | 39.0 cm (15.4 in) | 190.0 cm (74.8 in) |
| 체중 | 825.5 g (29.12 oz) | 6200.0 g (218.70 oz) |
| 식성 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow coastal water; diet dominated by benthic … | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … |
| 산란 수 | 6-14 | 4-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Ring-necked Duck
Breeds on boreal lakes and bogs in North America from Alaska and Canada south to the northern United States. Winters on freshwater lakes, reservoirs, and marshes across the southern United States, Mexico, and Caribbean.
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Ring-necked Duck
Male produces a low, purring wheeze; female gives a harsh, rolling quack. The purring male call is understated; found on North American freshwater lakes; female calls are emphatic and nasal.
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.
Geographic Range & Migration
Ring-necked Duck
Breeds in western Arctic Canada and Alaska; winters along the Pacific coast from Alaska to Baja California.
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
보전 상태
Ring-necked Duck
Black Swan
How to Tell Them Apart
Ring-necked Duck
Males black back and breast; gray flanks with white vertical mark near breast. Iridescent dark purple head with subtle chestnut neck ring. Bill blue-gray with white ring near tip. Females …
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
About These Birds
Ring-necked Duck
중간 크기의 잠수오리입니다. 수컷은 광택 검은 머리와 가슴, 흰 옆구리 줄무늬, 끝 근처에 흰 고리가 있는 회색 부리를 가지며 암컷은 갈색입니다. 잘 보이지 않는 갈색 목 고리에서 이름을 따왔습니다. 북미에서 흔하며 수생식물과 무척추동물을 잠수하여 먹습니다.
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.