Spotted Whistling-duck vs Masked Duck
Dendrocygna guttata 比較対象 Nomonyx dominicus
Side-by-Side Comparison
| 属性 | Spotted Whistling-duck | Masked Duck |
|---|---|---|
| 学名 | Dendrocygna guttata | Nomonyx dominicus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 41.3 cm (16.3 in) | 27.6 cm (10.9 in) |
| 体重 | 677.5 g (23.90 oz) | 361.0 g (12.73 oz) |
| 食性 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives and dabbles for aquatic seeds, plant matter, and invertebrates in freshwater marshes and ponds … |
| 一腹卵数 | 10-11 | 4-6 |
| 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
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.
Masked Duck
Male emits a soft, dove-like cooing note; female gives a harsh, emphatic quack. The male's gentle, almost melodic cooing is surprising for a stiff-tail; heard in tropical American marshes.
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.
Masked Duck
Resident from Mexico and the Caribbean south through Central America to northern South America. Found in lowland freshwater marshes and lagoons.
保全状況
Spotted Whistling-duck
Masked 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.
Masked Duck
Male is rich rufous-chestnut with black mask from forehead to face, boldly spotted black on upperparts; blue bill. Female is streaked buff and brown with two dark facial stripes crossing …
About These Birds
Spotted Whistling-duck
スポッテドウィスリングダックはインドネシア、フィリピン、パプアニューギニアに分布するツリーダックです。白い斑点のある褐色の羽毛が特徴で、夜間に特徴的な笛のような声でさえずります。熱帯の湿地、稲田、マングローブ林に生息し、草の種子や水草を採食します。
Masked Duck
マスクドダックは中南米に分布するカモです。雄は黒い顔の模様と青い嘴が特徴的で、尾を立てる習性があります。深い葦原に覆われた湿地に隠れるように生活し、観察が難しいです。水草の種子や無脊椎動物を採食します。