Black-headed Duck vs White-backed Duck
Heteronetta atricapilla 비교 대상 Thalassornis leuconotus
Side-by-Side Comparison
| 속성 | Black-headed Duck | White-backed Duck |
|---|---|---|
| 학명 | Heteronetta atricapilla | Thalassornis leuconotus |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.7 cm (13.7 in) | 33.3 cm (13.1 in) |
| 체중 | 528.5 g (18.64 oz) | 704.6666666666666 g (24.86 oz) |
| 식성 | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … | Eats aquatic plants, grasses, and seeds; large tropical swan grazing on lake margins and floating … |
| 산란 수 | 2 | 4-10 |
| Population Trend | — | — |
Habitat Comparison
White-backed Duck
Freshwater lakes, ponds, and swamps with abundant floating aquatic vegetation, especially water lilies, in sub-Saharan Africa and Madagascar. Prefers shallow sheltered water with emergent vegetation for cover.
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-backed Duck
Soft, low whistles and hissing sounds. The White-backed Duck is relatively quiet compared to whistling-ducks. Alarm call is a low 'peep'. Mostly heard at night.
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-backed Duck
Breeds in subarctic Canada; winters along the Atlantic coast from New England to Florida and on the Gulf Coast.
보전 상태
Black-headed Duck
White-backed Duck
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-backed Duck
Heavily mottled and barred brown and buff overall. Diagnostic white back patch visible in flight. Head brown with whitish face and chin. Stiff tail held erect. Sexes similar; stiff-tail diving …
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-backed Duck
흰등오리는 사하라 이남 아프리카와 마다가스카르의 습지에 서식하는 독특한 잠수 오리입니다. 갈색 줄무늬 깃털과 흰 등, 특이한 납작한 부리가 특징이며, 수생 식물이 무성한 얕은 연못과 호수에 서식합니다.