Black-headed Duck vs Salvadori's Teal
Heteronetta atricapilla 对比 Salvadorina waigiuensis
Side-by-Side Comparison
| 属性 | Black-headed Duck | Salvadori's Teal |
|---|---|---|
| 学名 | Heteronetta atricapilla | Salvadorina waigiuensis |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 34.7 cm (13.7 in) | 37.2 cm (14.6 in) |
| 体重 | 528.5 g (18.64 oz) | 345.6666666666667 g (12.19 oz) |
| 食性 | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … | Dabbles for seeds and aquatic invertebrates in shallow wetlands; diet broadly omnivorous; invertebrate intake peaks … |
| 产卵数 | 2 | 3-4 |
| Population Trend | — | — |
Habitat Comparison
Salvadori's Teal
Fast-flowing clear mountain streams and rivers at 1,000–3,900 m on New Guinea. Requires clean turbulent water with abundant aquatic invertebrates. Avoids lowland and polluted rivers.
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.
Salvadori's Teal
A soft, piping whistle from New Guinea mountain streams. Relatively poorly known; call is a gentle, reedy note. Behavior and vocalizations remain incompletely documented.
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.
Salvadori's Teal
Breeds across northern Eurasia; winters in tropical Africa, South Asia, and Southeast Asia. Broad Palearctic–Oriental migration.
保护状况
Black-headed Duck
Salvadori's Teal
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.
Salvadori's Teal
Dark brown plumage with fine pale spotting and barring throughout. Head dark brown; underparts barred brown and buff. Yellow bill with dark tip. Legs and feet yellow. Unique highland New …
About These Birds
Black-headed Duck
黑头鸭是南美洲的寄生性鸭子，不自己筑巢，而将卵产于其他水鸟（包括其他鸭类、䴙䴘、红鹭等）的巢中，由寄主孵化并抚育。分布于阿根廷、乌拉圭、智利和巴西南部。雄鸟头部黑色，体羽深褐色；雌鸟头部褐色。是唯一真正的全职巢寄生鸭类。
Salvadori's Teal
A small brown torrent-adapted duck with a yellow bill, spotted body, and barred flanks. Endemic to New Guinea's mountain rivers. Often compared to New Zealand's Blue Duck in ecological niche. Inhabits fast-flowing alpine streams. Poorly studied; listed as Vulnerable.