Yellow-billed Teal vs Wandering Whistling-duck
Anas flavirostris 比較対象 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | Yellow-billed Teal | Wandering Whistling-duck |
|---|---|---|
| 学名 | Anas flavirostris | Dendrocygna arcuata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 38.2 cm (15.0 in) | 37.2 cm (14.6 in) |
| 体重 | 609.0 g (21.48 oz) | 779.5 g (27.50 oz) |
| 食性 | Dives for molluscs, crustaceans, and aquatic invertebrates in coastal and freshwater habitats; diet dominated by … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 一腹卵数 | 5-13 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Yellow-billed Teal
Freshwater lakes, marshes, rivers, and bogs from sea level to 4,500 m across South America from Colombia and Venezuela south to Tierra del Fuego. Common at high-altitude Andean lakes and puna wetlands.
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
Yellow-billed Teal
Male utters a high-pitched, clear whistle; female gives a soft, muffled quack. Quiet calls suit the high-altitude Andean wetlands where this teal forages in shallow freshwater.
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
Yellow-billed Teal
Breeds in northern Canada and Alaska; winters on the Atlantic coast from Labrador to South Carolina and in Chesapeake Bay.
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
Yellow-billed Teal
Wandering Whistling-duck
How to Tell Them Apart
Yellow-billed Teal
Brownish-gray body finely mottled with dark spots. Diagnostic bright yellow bill with dark culmen stripe. Speculum iridescent green. Head grayish-brown, slightly darker crown. Sexes similar. Andean and Patagonian lakes.
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
Yellow-billed Teal
チリティールは南米に広く分布する小型のカモです。黄色い嘴が特徴で、アンデス山脈の高地湖沼から低地の湿地まで幅広い生息環境に適応しています。水草、種子、無脊椎動物を採食します。比較的環境への適応力が高く、農業景観内の水域にも生息します。
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。