Black-bellied Whistling-duck vs Black-headed Duck
Dendrocygna autumnalis 비교 대상 Heteronetta atricapilla
Side-by-Side Comparison
| 속성 | Black-bellied Whistling-duck | Black-headed Duck |
|---|---|---|
| 학명 | Dendrocygna autumnalis | Heteronetta atricapilla |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 48.2 cm (19.0 in) | 34.7 cm (13.7 in) |
| 체중 | 757.9 g (26.73 oz) | 528.5 g (18.64 oz) |
| 식성 | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes and agricultural fields eating … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| 산란 수 | 9-18 | 2 |
| Population Trend | — | — |
Habitat Comparison
Black-bellied Whistling-duck
Freshwater wetlands, ponds, lake margins, flooded fields, and wooded swamps from the southern United States and Mexico through Central America to Ecuador, Bolivia, and Argentina. Uses nest boxes readily.
Song & Call Comparison
Black-bellied Whistling-duck
A high, reedy whistle 'pe-che-che-ne' given in flight. Flocks produce a continuous whistling chorus. Also gives a squeaky 'whe-eee' contact call while swimming.
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
Black-bellied Whistling-duck
Inhabits freshwater marshes and riverbanks from southeastern Brazil to northern Argentina and Bolivia. Sedentary; locally common.
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
Black-bellied Whistling-duck
Black-headed Duck
How to Tell Them Apart
Black-bellied Whistling-duck
Gray head with brown cap and chestnut breast; black belly is distinctive. Wings show broad white patch in flight. Coral-pink bill and long pink legs. Upright posture. 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
Black-bellied Whistling-duck
밝은 붉은 부리, 밤색-검은색 몸통, 넓은 흰 날개 줄무늬, 특유의 휘파람 소리 울음을 가진 뚜렷한 무늬의 홍따오기. 미국 남부에서 남아메리카 중부까지 담수 습지에서 흔하다. 나무 구멍에 둥지를 튼다. 종종 나무에 횃대를 잡는데—물새로서는 이례적.
Black-headed Duck
검은머리오리(Heteronetta atricapilla)는 남아메리카산 약 530g의 소형 잠수 오리로, 오리과의 유일한 탁란성 종이다. 다른 수조류 둥지에 알을 낳는다.