Black-headed Duck vs White-winged Scoter
Heteronetta atricapilla 비교 대상 Melanitta deglandi
Side-by-Side Comparison
| 속성 | Black-headed Duck | White-winged Scoter |
|---|---|---|
| 학명 | Heteronetta atricapilla | Melanitta deglandi |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.7 cm (13.7 in) | 54.0 cm (21.3 in) |
| 체중 | 528.5 g (18.64 oz) | 1647.1666666666667 g (58.10 oz) |
| 식성 | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … | Dives for molluscs, crustaceans, and small fish in coastal and inland waters. Favours mussels and … |
| 산란 수 | 2 | 6-16 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black-headed Duck
Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.
White-winged Scoter
Male produces a soft, whistled note; female gives a harsh, grating call. Similar to Velvet Scoter; the female's rasping call carries across North Pacific bays and coastal inlets.
Geographic Range & Migration
Black-headed Duck
Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.
White-winged Scoter
Breeds in boreal forest and tundra of interior North America. Winters along Pacific and Atlantic coasts south to California and the Gulf states.
보전 상태
Black-headed Duck
White-winged Scoter
How to Tell Them Apart
Black-headed Duck
Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.
White-winged Scoter
Male is black with conspicuous white secondaries and a white comma-shaped mark below eye; orange-yellow bill with black basal knob. Female dark brownish-black with two pale facial patches and white …
About These Birds
Black-headed Duck
검은머리오리(Heteronetta atricapilla)는 남아메리카산 약 530g의 소형 잠수 오리로, 오리과의 유일한 탁란성 종이다. 다른 수조류 둥지에 알을 낳는다.
White-winged Scoter
대형 해오리로 체장 51–58cm이며, 수컷은 전신이 검은색에 흰 눈 반점과 노란색 혹이 있는 오렌지색 부리를 갖는다. 북아메리카 내륙 습지에서 번식하고 태평양 해안에서 월동한다. 잠수하여 연체동물과 갑각류를 먹는다. 관심 필요 종이다.