Spotted Whistling-duck vs Siberian Scoter
Dendrocygna guttata 比較対象 Melanitta stejnegeri
Side-by-Side Comparison
| 属性 | Spotted Whistling-duck | Siberian Scoter |
|---|---|---|
| 学名 | Dendrocygna guttata | Melanitta stejnegeri |
| 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) | 53.4 cm (21.0 in) |
| 体重 | 677.5 g (23.90 oz) | 1267.5 g (44.71 oz) |
| 食性 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for bivalves, crustaceans, and aquatic invertebrates in coastal East Asian waters. Diet similar to … |
| 一腹卵数 | 10-11 | 6-9 |
| 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.
Siberian Scoter
Male emits a soft, piping whistle; female produces a guttural, grating call. Voice resembles White-winged Scoter; heard during winter on East Asian coasts and large inland seas.
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.
Siberian Scoter
Breeds in boreal forests and tundra of central and eastern Siberia. Winters along the coasts of Japan, Korea, and northeastern China.
保全状況
Spotted Whistling-duck
Siberian Scoter
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.
Siberian Scoter
Male is uniformly black with white secondaries forming wing patch; orange-yellow bill has large black knob at base and pale yellow tip. Female dark brown with paler facial patches and …
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。
Siberian Scoter
シベリアスコーター。東アジア北部のシベリアで繁殖し、日本や韓国の沿岸で越冬する。雄は黒色で複雑な色の嘴と白い目が特徴的。貝類や甲殻類を潜水して捕食する。脆弱種。