Wandering Whistling-duck vs White-faced Whistling-duck
Dendrocygna arcuata 比較対象 Dendrocygna viduata
Side-by-Side Comparison
| 属性 | Wandering Whistling-duck | White-faced Whistling-duck |
|---|---|---|
| 学名 | Dendrocygna arcuata | Dendrocygna viduata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 37.2 cm (14.6 in) | 42.9 cm (16.9 in) |
| 体重 | 779.5 g (27.50 oz) | 689.5 g (24.32 oz) |
| 食性 | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes eating saltmarsh grasses and … |
| 一腹卵数 | 6-15 | 4-16 |
| 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.
White-faced Whistling-duck
Freshwater lakes, marshes, rice paddies, flooded fields, and slow-moving rivers in sub-Saharan Africa and tropical South America. Tolerates a wide range of modified wetlands. Nomadic, following water availability.
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-faced Whistling-duck
A clear, 3-syllable whistle 'wee-wee-WEE' — the origin of 'whistling-duck'. Given in noisy flocks during flight. Also gives a softer 'de-de-de' contact call on water.
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-faced Whistling-duck
Found in floodplains and wetlands of the Llanos in Venezuela and eastern Colombia. Sedentary and locally nomadic in wet savannas.
保全状況
Wandering Whistling-duck
White-faced Whistling-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-faced Whistling-duck
Distinctive white face and throat contrasting with black hindneck. Breast chestnut; sides and flanks barred black and white. Back brown. Long gray legs. Sexes identical; upright whistling-duck posture.
About These Birds
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。
White-faced Whistling-duck
ホワイトフェースウィスリングダックはアフリカとアメリカ熱帯地域に広く分布するツリーダックです。白い顔と栗色の胸が特徴的です。湿地、稲田、草原の池に生息し、水草の種子、無脊椎動物、藻類を採食します。