Spotted Whistling-duck vs Common Shelduck
Dendrocygna guttata 对比 Tadorna tadorna
Side-by-Side Comparison
| 属性 | Spotted Whistling-duck | Common Shelduck |
|---|---|---|
| 学名 | Dendrocygna guttata | Tadorna tadorna |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 41.3 cm (16.3 in) | 62.8 cm (24.7 in) |
| 体重 | 677.5 g (23.90 oz) | 1035.5 g (36.53 oz) |
| 食性 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Eats seeds, leaves, and aquatic invertebrates; dabbles in shallow water; diet broadly omnivorous and varies … |
| 产卵数 | 10-11 | 3-18 |
| 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.
Common Shelduck
Coastal estuaries, mudflats, saltmarshes, sand dunes, and inland saline lakes from northwest Europe east across Eurasia to China. Winters mainly on tidal estuaries and coastal wetlands. Nests in burrows.
Song & Call Comparison
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.
Common Shelduck
Male gives a whistled 'wheee'; female gives a cackling series of rapid nasal 'ak-ak-ak' notes. One of the most sexually dimorphic calls of any shelduck species.
Geographic Range & Migration
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
Common Shelduck
Breeds in Siberian tundra; winters in eastern and southern Africa, and in South and Southeast Asia. Trans-hemispheric migrant.
保护状况
Spotted Whistling-duck
Common Shelduck
How to Tell Them Apart
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.
Common Shelduck
White body with dark green head, broad chestnut breastband, and black scapular stripes. Red bill with basal knob in males. Green speculum and black wingtips. Underparts white with black belly …
About These Birds
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。
Common Shelduck
翘鼻麻鸭是欧亚大陆西部沿海地区最常见的大型鸭子，以其鲜红色的嘴部（雄鸟具肉瘤）、黑绿色头部、栗色胸带和白色体羽的对比色彩著称，外形华丽。繁殖于欧洲和中亚，越冬于地中海、北非和中国南部。常在兔子洞或沙丘中营巢，以软体动物（主要是泥螺）和甲壳类为食。