Black-headed Duck vs Maccoa Duck
Heteronetta atricapilla 对比 Oxyura maccoa
Side-by-Side Comparison
| 属性 | Black-headed Duck | Maccoa Duck |
|---|---|---|
| 学名 | Heteronetta atricapilla | Oxyura maccoa |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Endangered |
| 体长 | — | — |
| 翼展 | 34.7 cm (13.7 in) | 31.3 cm (12.3 in) |
| 体重 | 528.5 g (18.64 oz) | 685.3333333333334 g (24.17 oz) |
| 食性 | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … | Dives for aquatic invertebrates and plant seeds in African lakes and marshes. Uses lobed feet … |
| 产卵数 | 2 | 4-12 |
| 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.
Maccoa Duck
Male emits a rapid, staccato drumming display; female gives a harsh, emphatic quack. The drumming call is powerful and diagnostic; this endangered southern African stiff-tail displays at dawn.
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.
Maccoa Duck
Resident in eastern and southern Africa from Ethiopia and Kenya south to the Cape. Found on lakes and marshes with dense aquatic vegetation.
保护状况
Black-headed Duck
Maccoa 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.
Maccoa Duck
Male has glossy black head, deep chestnut-red body, and vivid sky-blue bill; stiff tail often cocked. Female is dark brown above with streaked buff below and two pale facial stripes …
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。
Maccoa Duck
马科硬尾鸭是非洲东部和南部的小型硬尾鸭，主要分布于肯尼亚、坦桑尼亚、津巴布韦和南非。雄鸟繁殖羽体羽棕红色，头部黑色，嘴部亮蓝色，尾羽刚硬竖起；雌鸟褐色。栖息于富营养化的浅水湖泊和大型沼泽，以水生植物和无脊椎动物为食，被列为易危物种。