White-faced Whistling-duck vs Black-headed Duck
Dendrocygna viduata 비교 대상 Heteronetta atricapilla
Side-by-Side Comparison
| 속성 | White-faced Whistling-duck | Black-headed Duck |
|---|---|---|
| 학명 | Dendrocygna viduata | Heteronetta atricapilla |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 42.9 cm (16.9 in) | 34.7 cm (13.7 in) |
| 체중 | 689.5 g (24.32 oz) | 528.5 g (18.64 oz) |
| 식성 | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes eating saltmarsh grasses and … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| 산란 수 | 4-16 | 2 |
| Population Trend | — | — |
Habitat Comparison
White-faced Whistling-duck
Freshwater lakes, marshes, rice paddies, flooded fields, and slow-moving rivers in sub-Saharan Africa and tropical South America. Tolerates a wide range of modified wetlands. Nomadic, following water availability.
Song & Call Comparison
White-faced Whistling-duck
A clear, 3-syllable whistle 'wee-wee-WEE' — the origin of 'whistling-duck'. Given in noisy flocks during flight. Also gives a softer 'de-de-de' contact call on water.
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.
Geographic Range & Migration
White-faced Whistling-duck
Found in floodplains and wetlands of the Llanos in Venezuela and eastern Colombia. Sedentary and locally nomadic in wet savannas.
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.
보전 상태
White-faced Whistling-duck
Black-headed Duck
How to Tell Them Apart
White-faced Whistling-duck
Distinctive white face and throat contrasting with black hindneck. Breast chestnut; sides and flanks barred black and white. Back brown. Long gray legs. Sexes identical; upright whistling-duck posture.
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.
About These Birds
White-faced Whistling-duck
눈에 띄는 흰 얼굴, 밤색 몸통, 줄무늬 옆구리, 독특한 세 음의 휘파람 소리를 가진 키 크고 우아하게 생긴 홍따오기. 사하라 이남 아프리카·남아메리카에 널리 분포. 담수 지점에 큰 소란스러운 무리를 이룬다. 매우 사회적; 집단으로 쉬고 둥지를 튼다.
Black-headed Duck
검은머리오리(Heteronetta atricapilla)는 남아메리카산 약 530g의 소형 잠수 오리로, 오리과의 유일한 탁란성 종이다. 다른 수조류 둥지에 알을 낳는다.