Spotted Whistling-duck vs Comb Duck
Dendrocygna guttata 对比 Sarkidiornis sylvicola
Side-by-Side Comparison
| 属性 | Spotted Whistling-duck | Comb Duck |
|---|---|---|
| 学名 | Dendrocygna guttata | Sarkidiornis sylvicola |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 41.3 cm (16.3 in) | 60.9 cm (24.0 in) |
| 体重 | 677.5 g (23.90 oz) | 1817.5 g (64.11 oz) |
| 食性 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Feeds on seeds, plant material, and invertebrates; dabbles and sifts shallow water; diet varies widely … |
| 产卵数 | 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.
Comb Duck
Freshwater lakes, rivers, flooded savannas, and seasonally inundated forest in lowland tropical South America from Panama south to Bolivia, Brazil, and northern Argentina. Nests in tree cavities near permanent water.
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.
Comb Duck
A soft, nasal 'wuk-wuk' call. Both sexes give similar quiet calls. Generally a less vocal duck than most waterfowl. Gives a rattling wingbeat sound during flight.
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.
Comb Duck
Breeds in the prairie pothole region of central North America; winters along the Pacific coast from Alaska to Mexico.
保护状况
Spotted Whistling-duck
Comb Duck
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.
Comb Duck
Males have white head densely spotted black; black back with blue-green iridescence; white underparts with gray flanks. Prominent black fleshy knob on bill. Females smaller, duller, lack knob. South American.
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。
Comb Duck
新大陆栉雁是南美洲和中美洲特有的大型树栖鸭，雄鸟头顶具特征性黑色肉冠，有时被视为非洲栉雁的亚种或独立物种。体羽黑白相间，体侧浅灰色。栖息于热带森林河流和湖泊，在树洞中营巢，以水生植物、谷物和无脊椎动物为食。