Green-winged Teal vs Wandering Whistling-duck
Anas carolinensis 比較対象 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | Green-winged Teal | Wandering Whistling-duck |
|---|---|---|
| 学名 | Anas carolinensis | Dendrocygna arcuata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 35.0 cm (13.8 in) | 37.2 cm (14.6 in) |
| 体重 | 330.5 g (11.66 oz) | 779.5 g (27.50 oz) |
| 食性 | Eats aquatic invertebrates, molluscs, and seeds; dives in shallow water; diet shifts between invertebrates and … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 一腹卵数 | -- | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Green-winged Teal
Breeds on boreal and subarctic wetlands across North America. Winters on freshwater marshes, coastal estuaries, rice paddies, and shallow wetlands from the southern United States to Central America and the Caribbean.
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
Green-winged Teal
Male produces a high, clear krick call; female gives a subdued quack. Closely related to Common Teal; male's ringing call punctuates North American freshwater marshes in spring.
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
Green-winged Teal
Breeds in Arctic regions; winters at sea across the North Pacific, from Alaska to Japan and northern California.
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
Green-winged Teal
Wandering Whistling-duck
How to Tell Them Apart
Green-winged Teal
Males have chestnut head with iridescent green eye patch; gray body; vertical white shoulder stripe (vs. horizontal in Common Teal). Cream and black undertail. Females mottled brown. Smallest North American …
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
Green-winged Teal
グリーンウィングティールは北米に繁殖するコガモに近縁の小型カモです。雄は栗色の頭部と緑色の翼斑が特徴です。内陸の湿地、池、湖に生息し、秋には大きな群れで南方に渡ります。水草の種子、昆虫、甲殻類などを採食します。北米で最もよく見られる狩猟鳥の一つです。
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。