Bufflehead vs Spotted Whistling-duck
Bucephala albeola 对比 Dendrocygna guttata
Side-by-Side Comparison
| 属性 | Bufflehead | Spotted Whistling-duck |
|---|---|---|
| 学名 | Bucephala albeola | Dendrocygna guttata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 32.2 cm (12.7 in) | 41.3 cm (16.3 in) |
| 体重 | 400.5 g (14.13 oz) | 677.5 g (23.90 oz) |
| 食性 | Dives for aquatic insects, crustaceans, and small molluscs in freshwater and coastal habitats. One of … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 产卵数 | 5-14 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
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
Bufflehead
Male produces a soft, squeaky whistle; female gives a harsh, nasal quack. The male's thin, reedy whistle is barely audible; pairs exchange quiet contact calls at boreal forest ponds.
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
Bufflehead
Breeds in boreal forest of western and central North America. Winters along both coasts and interior lakes from southern Canada south to Mexico.
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
Bufflehead
Spotted Whistling-duck
How to Tell Them Apart
Bufflehead
Male has iridescent green-purple head with a large triangular white patch from behind eye over crown; body clean white except for black back. Female is dark sooty-brown with a single …
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
Bufflehead
白枕鹊鸭是北美最小的潜鸭之一，雄鸟头部黑绿色有光泽，枕部具大型白斑，体羽黑白分明；雌鸟褐色，脸侧有白斑。繁殖于加拿大和阿拉斯加的针叶林湖泊，在啄木鸟挖凿的树洞中营巢。越冬于沿海海湾和内陆水库，以水生昆虫和无脊椎动物为食。
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。