Brazilian Teal vs Wandering Whistling-duck
Amazonetta brasiliensis 比較対象 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | Brazilian Teal | Wandering Whistling-duck |
|---|---|---|
| 学名 | Amazonetta brasiliensis | Dendrocygna arcuata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 36.1 cm (14.2 in) | 37.2 cm (14.6 in) |
| 体重 | 468.0 g (16.51 oz) | 779.5 g (27.50 oz) |
| 食性 | Dabbles for aquatic invertebrates and seeds; diet shifts toward plant material outside breeding season; forages … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 一腹卵数 | 6-11 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Brazilian Teal
Freshwater lakes, marshes, rivers, flooded forest, and rice paddies across tropical and subtropical South America from Colombia and Venezuela south to northern Argentina. Tolerates natural and agricultural 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
Brazilian Teal
Male produces a nasal, whistled wheee-oh note; female gives a short, sharp quack. Pairs call back and forth with clear whistled exchanges along Amazonian rivers.
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
Brazilian Teal
Breeds in Eurasia and winters in tropical regions from Africa to Southeast Asia. Migratory over broad fronts.
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
Brazilian Teal
Wandering Whistling-duck
How to Tell Them Apart
Brazilian Teal
Males have red bill and legs; brown body with dark brown back, gray head, buff-white face, and dark crown. Females have pale supercilium and paler face. Both show iridescent green …
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
Brazilian Teal
ブラジリアンティールは南米に広く分布する小型のカモです。赤い嘴と緑色の翼鏡が特徴的です。熱帯・亜熱帯の湿地、池、川、稲田に生息し、水草、種子、無脊椎動物を採食します。南米で最も普通に見られるカモの一つです。
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。