Wandering Whistling-duck vs Common Scoter
Dendrocygna arcuata 对比 Melanitta nigra
Side-by-Side Comparison
| 属性 | Wandering Whistling-duck | Common Scoter |
|---|---|---|
| 学名 | Dendrocygna arcuata | Melanitta nigra |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 37.2 cm (14.6 in) | 44.2 cm (17.4 in) |
| 体重 | 779.5 g (27.50 oz) | 1127.25 g (39.76 oz) |
| 食性 | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Dives for bivalves, especially cockles, mussels, and clams, in shallow coastal seas. Also eats crustaceans … |
| 产卵数 | 6-15 | 6-8 |
| 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.
Common Scoter
Male gives a soft, piping whistle; female produces a harsh, rasping call. The male's piping whistle is subtle; female's harsh calls dominate on European winter coasts and estuaries.
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.
Common Scoter
Breeds on moorland and boreal tundra from Iceland and Britain east to western Siberia. Winters on northwestern European coasts and the Baltic Sea.
保护状况
Wandering Whistling-duck
Common Scoter
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.
Common Scoter
Male is entirely sooty black without white markings; orange-yellow patch on upper bill with small black knob. Female brownish-black above with contrasting pale cream cheeks and throat.
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。
Common Scoter
黑海番鸭是欧亚大陆的黑色海鸭，雄鸟全身黑色，仅嘴基具明亮的橙黄色斑块；雌鸟褐色，脸颊浅色。繁殖于苏格兰、斯堪的纳维亚和西伯利亚北部，越冬于西欧和北非大西洋沿岸。善潜水，以软体动物和甲壳类为食，常在近岸浅海越冬。