Green-winged Teal vs Spotted Whistling-duck
Anas carolinensis 对比 Dendrocygna guttata
Side-by-Side Comparison
| 属性 | Green-winged Teal | Spotted Whistling-duck |
|---|---|---|
| 学名 | Anas carolinensis | Dendrocygna guttata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 35.0 cm (13.8 in) | 41.3 cm (16.3 in) |
| 体重 | 330.5 g (11.66 oz) | 677.5 g (23.90 oz) |
| 食性 | Eats aquatic invertebrates, molluscs, and seeds; dives in shallow water; diet shifts between invertebrates and … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 产卵数 | -- | 10-11 |
| 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.
Spotted Whistling-duck
Freshwater wetlands, rice fields, streams, and forest pools in New Guinea, Sulawesi, the Philippines, and Moluccas. Often found near forested rivers and seasonal swamps at low elevations.
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.
Spotted Whistling-duck
A musical, high whistle similar to other whistling-ducks. Call is softer and less far-carrying than White-faced or Black-bellied species. Given in flight and on water.
Geographic Range & Migration
Green-winged Teal
Breeds in Arctic regions; winters at sea across the North Pacific, from Alaska to Japan and northern California.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
保护状况
Green-winged Teal
Spotted 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 …
Spotted Whistling-duck
Dark brown above; head and neck dark brown. Underparts heavily spotted white on dark brown ground, giving spotted appearance. Flanks with bold white spots. Pink-red bill and legs. Sexes similar.
About These Birds
Green-winged Teal
美洲绿翅鸭（Anas carolinensis）是一种小型戏水鸭，是欧洲绿翅鸭在北美洲的对应种。雄鸟头部栗色，眼圈周围具闪光绿色斑块。属鸭科（Anatidae），在北美繁殖，越冬至中美洲和南美洲。
Spotted Whistling-duck
斑树鸭是东南亚和西南太平洋的树鸭，分布于印度尼西亚、菲律宾、巴布亚新几内亚及澳大利亚北部。体羽深褐色，胸部和腹部具白色斑点，嘴灰黑色。栖息于热带雨林的湖泊、河流和湿地，以水生植物、种子和无脊椎动物为食，在树洞中营巢。