Barrow's Goldeneye vs Spotted Whistling-duck
Bucephala islandica 对比 Dendrocygna guttata
Side-by-Side Comparison
| 属性 | Barrow's Goldeneye | Spotted Whistling-duck |
|---|---|---|
| 学名 | Bucephala islandica | Dendrocygna guttata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 44.3 cm (17.4 in) | 41.3 cm (16.3 in) |
| 体重 | 838.0 g (29.56 oz) | 677.5 g (23.90 oz) |
| 食性 | Dives for crustaceans, aquatic insects, and molluscs in mountain lakes and coastal bays. Diet similar … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 产卵数 | 6-14 | 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
Barrow's Goldeneye
Male produces a whistled, nasal kaow-kaow call; female gives a harsh quacking series. The male's wheezy, double call differs from Common Goldeneye; heard on western North American lakes.
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
Barrow's Goldeneye
Breeds in Iceland, western Canada, and locally the western United States. Winters on coasts and lakes of the Pacific Northwest and eastern Canada.
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
Barrow's Goldeneye
Spotted Whistling-duck
How to Tell Them Apart
Barrow's Goldeneye
Male has iridescent purple-black head with crescent-shaped white facial patch; white body with black scapulars bearing bold white spots. Female grey with brown head, white collar; head rounder than Common …
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
Barrow's Goldeneye
冰岛鹊鸭主要繁殖于冰岛和加拿大西部落基山脉，越冬于北大西洋沿岸。雄鸟头部深紫色，眼前有月牙形白斑，背部黑色有白色斑纹；雌鸟与普通鹊鸭相似。偏好高山湖泊和急流，在岩缝或树洞中营巢，以甲壳类和软体动物为食。
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。