Wandering Whistling-duck vs White-headed Duck
Dendrocygna arcuata 对比 Oxyura leucocephala
Side-by-Side Comparison
| 属性 | Wandering Whistling-duck | White-headed Duck |
|---|---|---|
| 学名 | Dendrocygna arcuata | Oxyura leucocephala |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Endangered |
| 体长 | — | — |
| 翼展 | 37.2 cm (14.6 in) | 29.7 cm (11.7 in) |
| 体重 | 779.5 g (27.50 oz) | 705.0 g (24.87 oz) |
| 食性 | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Dives for aquatic invertebrates, seeds, and plant roots in Mediterranean and Central Asian wetlands. Critically … |
| 产卵数 | 6-15 | 3-10 |
| Population Trend | — | — |
Habitat Comparison
Wandering Whistling-duck
Tropical freshwater marshes, flooded grasslands, swamps, and lake margins from the Philippines and Indonesia through Papua New Guinea to northern and eastern Australia. Nomadic following wet season flooding.
Song & Call Comparison
Wandering Whistling-duck
A soft whistle 'whi-whi-whi' in flight. Less vocal than other whistling-ducks; flocks tend to be quieter. Given at dawn and dusk during flight to roosting or feeding areas.
White-headed Duck
Male produces a mechanical, rapid bill-drumming; female gives a harsh, grating quack. The drumming staccato display is the same pattern as other Oxyura stiff-tails; heard on Eurasian steppe lakes.
Geographic Range & Migration
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
White-headed Duck
Breeds in Spain, Turkey, central Asia, and Mongolia. Winters in the Mediterranean, the Middle East, and northern India. Globally endangered.
保护状况
Wandering Whistling-duck
White-headed Duck
How to Tell Them Apart
Wandering Whistling-duck
Rich chestnut-brown head and neck; dark brown back. Flanks rufous with pale buff streaks and dark spots. Belly blackish. Long, dark pinkish legs. Upright posture typical of whistling-ducks. Sexes similar.
White-headed Duck
Male has entirely white head with small black crown patch, rich chestnut-brown body, and large bulbous powder-blue bill. Female is brown with pale whitish face divided by dark streak across …
About These Birds
Wandering Whistling-duck
流苏树鸭分布于东南亚至澳大利亚北部的热带地区，包括印度尼西亚、菲律宾和新几内亚。以翼上具浅色流苏状羽毛为特征。体羽褐色，具栗褐色和白色斑纹。栖息于热带淡水湖泊和沼泽，以水生植物和无脊椎动物为食，常在水中觅食，也在树洞中营巢。
White-headed Duck
白头硬尾鸭是地中海地区濒危的小型硬尾鸭，雄鸟白色大头、蓝色嘴和竖起的黑色尾羽极具特色；雌鸟褐色，脸颊有深色横纹。繁殖于西班牙、北非、土耳其和中亚，由于湿地破坏、猎捕和与北美草原硬尾鸭的杂交竞争，被列为濒危物种，全球数量估计不足1万只。