West Indian Whistling-duck vs Wandering Whistling-duck
Dendrocygna arborea 比較対象 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 |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 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 … |
| 一腹卵数 | 4-16 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
West Indian Whistling-duck only
Wandering Whistling-duck only
None
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.
保全状況
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
キューバンウィスリングダックはカリブ海の大小アンティル諸島に固有のツリーダックです。大型で全身が褐色、腹の斑点が特徴的です。ヤシ林の近くの湿地や稲田に生息し、ヤシの実や水草を採食します。生息地の破壊と狩猟により個体数が減少しています。
Wandering Whistling-duck
ワンデリングウィスリングダックは東南アジアからオーストラリアにかけて分布するツリーダックです。栗色の羽毛と長い首が特徴で、群れで移動します。湿地、稲田、水草に覆われた湖に生息し、水草、種子、藻類を採食します。