Wandering Whistling-duck vs White-winged Scoter
Dendrocygna arcuata 对比 Melanitta deglandi
Side-by-Side Comparison
| 属性 | Wandering Whistling-duck | White-winged Scoter |
|---|---|---|
| 学名 | Dendrocygna arcuata | Melanitta deglandi |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 37.2 cm (14.6 in) | 54.0 cm (21.3 in) |
| 体重 | 779.5 g (27.50 oz) | 1647.1666666666667 g (58.10 oz) |
| 食性 | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Dives for molluscs, crustaceans, and small fish in coastal and inland waters. Favours mussels and … |
| 产卵数 | 6-15 | 6-16 |
| 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-winged Scoter
Male produces a soft, whistled note; female gives a harsh, grating call. Similar to Velvet Scoter; the female's rasping call carries across North Pacific bays and coastal inlets.
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-winged Scoter
Breeds in boreal forest and tundra of interior North America. Winters along Pacific and Atlantic coasts south to California and the Gulf states.
保护状况
Wandering Whistling-duck
White-winged 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.
White-winged Scoter
Male is black with conspicuous white secondaries and a white comma-shaped mark below eye; orange-yellow bill with black basal knob. Female dark brownish-black with two pale facial patches and white …
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-winged Scoter
白翅斑海番鸭是北美的大型黑色海鸭，雄鸟全身黑色，翼上具白色翼镜，眼下有白斑，嘴基肉瘤橙色。繁殖于加拿大西部和阿拉斯加的泰加林和苔原，越冬于北太平洋和大西洋沿岸。善深潜，以软体动物和甲壳类为食。常结大群在沿海越冬。