Black-headed Duck vs Blue-billed Duck
Heteronetta atricapilla 비교 대상 Oxyura australis
Side-by-Side Comparison
| 속성 | Black-headed Duck | Blue-billed Duck |
|---|---|---|
| 학명 | Heteronetta atricapilla | Oxyura australis |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.7 cm (13.7 in) | 30.8 cm (12.1 in) |
| 체중 | 528.5 g (18.64 oz) | 837.75 g (29.55 oz) |
| 식성 | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … | Dives for aquatic invertebrates, seeds, and plant material in Australian freshwater lakes and swamps. Highly … |
| 산란 수 | 2 | 5-6 |
| 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.
Blue-billed Duck
Male produces a mechanical, splashing display call with loud bill-drumming; female gives a harsh quack. The male's bizarre bubbling-cum-drumming display is spectacular on Australian lakes.
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.
Blue-billed Duck
Resident in southwestern and southeastern Australia. Found on freshwater swamps and lakes, avoiding arid and tropical regions.
보전 상태
Black-headed Duck
Blue-billed 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.
Blue-billed Duck
Breeding male is deep rich chestnut with black head and broad bright blue bill; tail often held erect. Female is dark brown with finely barred buff pattern on body and …
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.
Blue-billed Duck
Australia's only endemic stiff-tailed duck (~840 g), family Anatidae, males recognized by deep chestnut plumage and a vibrant blue bill in breeding season. Inhabits deep freshwater lakes and swamps in southeastern and southwestern Australia. Dives for aquatic invertebrates and plant matter. Least Concern; dependent on permanent water bodies, vulnerable to drought cycles.