Red-billed Teal vs Wandering Whistling-duck
Anas erythrorhyncha 比較対象 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | Red-billed Teal | Wandering Whistling-duck |
|---|---|---|
| 学名 | Anas erythrorhyncha | Dendrocygna arcuata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 43.0 cm (16.9 in) | 37.2 cm (14.6 in) |
| 体重 | 648.0 g (22.86 oz) | 779.5 g (27.50 oz) |
| 食性 | Dives for molluscs, crustaceans, and small fish in coastal and freshwater habitats; diet shifts with … | 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
Red-billed Teal
Freshwater lakes, marshes, pans, and flooded fields across sub-Saharan Africa from Ethiopia and Sudan south to the Cape. Nomadic; follows seasonal flooding. Very tolerant of saline conditions.
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
Red-billed Teal
Female produces a loud, nasal quacking series; male gives a soft, nasal grunt. Both sexes call with emphatic, honking quacks that carry across African open wetlands and dams.
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
Red-billed Teal
Breeds in northern Eurasia and Arctic Canada; winters on open ocean in the North Atlantic and North Pacific.
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
Red-billed Teal
Wandering Whistling-duck
How to Tell Them Apart
Red-billed Teal
Diagnostic bright pink-red bill with dark ridge contrasting with dark brown cap. Body brown, finely scalloped. White sides of face. Pale buff-white speculum with dark border. Sexes similar. Sub-Saharan Africa.
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
Red-billed Teal
レッドビルドダックはアフリカ南部と東部に広く分布するカモです。鮮やかな赤い嘴が最大の特徴で、全身は褐色のまだら模様をしています。湖、池、湿地、稲田に生息し、種子や水草を主食とします。アフリカで最もよく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。