Spotted Whistling-duck vs Hooded Merganser
Dendrocygna guttata 比較対象 Lophodytes cucullatus
Side-by-Side Comparison
| 属性 | Spotted Whistling-duck | Hooded Merganser |
|---|---|---|
| 学名 | Dendrocygna guttata | Lophodytes cucullatus |
| 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) | 37.3 cm (14.7 in) |
| 体重 | 677.5 g (23.90 oz) | 638.0 g (22.50 oz) |
| 食性 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for small fish, aquatic invertebrates, and frogs in clear freshwater streams and ponds. Uses … |
| 一腹卵数 | 10-11 | 6-18 |
| 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.
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.
Hooded Merganser
Male produces a low, rolling rolling-tum tumbling call; female gives a harsh, grating quack. The male's frog-like rolling call is unique among North American ducks during winter courtship.
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.
Hooded Merganser
Breeds in forested wetlands of North America from southern Canada to the northern United States. Winters on rivers and lakes south to Mexico.
保全状況
Spotted Whistling-duck
Hooded Merganser
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.
Hooded Merganser
Male has fan-shaped black-and-white erectile crest; black head and neck, white breast with two black bars, rich cinnamon flanks. Female is greyish-brown with rusty-cinnamon crest, paler below.
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。
Hooded Merganser
フードマーガンサーは北米の森林に繁殖する小型の潜水性カモです。雄の大きな扇形の白い冠羽が最大の特徴で、黒と白の羽毛が美しいです。森林の池や川に生息し、魚、甲殻類、水生昆虫を潜って採食します。木の洞に営巣します。