West Indian Whistling-duck vs Wandering Whistling-duck
Dendrocygna arborea 对比 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | West Indian Whistling-duck | Wandering Whistling-duck |
|---|---|---|
| 学名 | Dendrocygna arborea | Dendrocygna arcuata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Near Threatened | Least Concern |
| 体长 | — | — |
| 翼展 | 51.3 cm (20.2 in) | 37.2 cm (14.6 in) |
| 体重 | 1030.0 g (36.33 oz) | 779.5 g (27.50 oz) |
| 食性 | Eats grasses, sedges, and grains; migratory goose foraging in Arctic tundra in summer; overwinters on … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 产卵数 | 4-16 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
West Indian Whistling-duck
Freshwater lakes, mangrove swamps, palm savannas, and forested wetlands in the Greater and Lesser Antilles. Nests in palm crowns and hollow trees. Highly dependent on Caribbean wet forests and freshwater lagoons.
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
West Indian Whistling-duck
A loud, 3-syllable whistle 'whee-whee-whee'. The NT conservation status reflects population pressures. Less commonly heard than its more abundant whistling-duck relatives.
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.
Geographic Range & Migration
West Indian Whistling-duck
Found in grassy wetlands and floodplains of Madagascar. Non-migratory and endemic to the island's eastern marshes.
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
保护状况
West Indian Whistling-duck
Wandering Whistling-duck
How to Tell Them Apart
West Indian Whistling-duck
Dark brown upperparts; head and neck dark with pale sides. Flanks black with bold white spots. Breast dark brown; belly blackish with white flank streaks. Long dark legs. Largest Dendrocygna. …
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.
About These Birds
West Indian Whistling-duck
西印度树鸭是加勒比海地区特有的树鸭，主要分布于古巴、多明尼加、海地和巴哈马。以树为栖，常在红树林和棕榈林中栖息。体羽深褐色，腹部有黑色斑点，面部灰白色。以棕榈果实、水生植物和谷物为食。由于栖息地丧失和猎捕，被列为易危物种。
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。