Lesser Whistling-duck vs Black-headed Duck
Dendrocygna javanica 비교 대상 Heteronetta atricapilla
Side-by-Side Comparison
| 속성 | Lesser Whistling-duck | Black-headed Duck |
|---|---|---|
| 학명 | Dendrocygna javanica | Heteronetta atricapilla |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 38.8 cm (15.3 in) | 34.7 cm (13.7 in) |
| 체중 | 525.0 g (18.52 oz) | 528.5 g (18.64 oz) |
| 식성 | Grazes subarctic grasses and rushes; migratory; winters on estuarine mudflats and coastal grasslands eating eelgrass … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| 산란 수 | 7-17 | 2 |
| Population Trend | — | — |
Habitat Comparison
Lesser Whistling-duck
Freshwater wetlands, lakes, rice paddies, mangroves, and slow rivers across South and Southeast Asia from India through southern China to Borneo and Indonesia. Common near cultivated land and human settlements.
Song & Call Comparison
Lesser Whistling-duck
A softer, higher-pitched whistle than other Dendrocygna. Call is a quick 'we-we' given in flight. Smaller size reflected in higher-pitched and thinner quality of call.
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
Lesser Whistling-duck
Breeds on tundra of northern Canada and Alaska; winters on the Pacific coast from California to Mexico and Central America.
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
Lesser Whistling-duck
Black-headed Duck
How to Tell Them Apart
Lesser Whistling-duck
Warm chestnut-brown overall; head and neck brown; upperparts dark brown. Chestnut rump and upper-tail conspicuous in flight. Flanks chestnut with pale streaks. Bill and legs dark gray. Sexes similar.
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
Lesser Whistling-duck
밤색 위꼬리덮깃, 엷은 얼굴, 어두운 갈색 머리를 가진 소형 따뜻한 갈색 홍따오기. 아시아에서 가장 널리 분포하고 흔한 홍따오기. 인도 아대륙에서 동남아시아까지 담수 습지에 서식. 나무 구멍과 가끔 초가지붕에 둥지를 튼다.
Black-headed Duck
검은머리오리(Heteronetta atricapilla)는 남아메리카산 약 530g의 소형 잠수 오리로, 오리과의 유일한 탁란성 종이다. 다른 수조류 둥지에 알을 낳는다.