Black-headed Duck vs Smew
Heteronetta atricapilla 비교 대상 Mergellus albellus
Side-by-Side Comparison
| 속성 | Black-headed Duck | Smew |
|---|---|---|
| 학명 | Heteronetta atricapilla | Mergellus albellus |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.7 cm (13.7 in) | 37.5 cm (14.8 in) |
| 체중 | 528.5 g (18.64 oz) | 658.75 g (23.24 oz) |
| 식성 | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … | Dives for small fish, aquatic insects, and crustaceans in freshwater and coastal habitats. Uses serrated … |
| 산란 수 | 2 | 5-11 |
| 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.
Smew
Male gives a soft, crow-like krr note; female produces a grating, rasping call. Both sexes are relatively quiet; the male's harsh, crow-like call is surprisingly low for such a small …
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.
Smew
Breeds in boreal forests of northern Europe and Siberia. Winters on large lakes and coasts from western Europe east to Japan and China.
보전 상태
Black-headed Duck
Smew
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.
Smew
Male is largely white with black eye patch, black lines on back, and fine black lines on flanks creating a cracked-ice pattern. Female has chestnut-red head, white cheeks, and grey …
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.
Smew
소형 오리로 체장 38–44cm이며, 수컷은 흰색에 검은 눈 반점과 등 줄무늬를 갖는 매우 이쁜 외모이다. 유라시아 북부의 잔잔한 수면에서 번식하고 유럽과 아시아에서 월동한다. 잠수하여 소형 어류, 갑각류, 수생 곤충을 먹는다. 관심 필요 종이다.