Spotted Whistling-duck vs Cotton Pygmy-goose
Dendrocygna guttata 比較対象 Nettapus coromandelianus
Side-by-Side Comparison
| 属性 | Spotted Whistling-duck | Cotton Pygmy-goose |
|---|---|---|
| 学名 | Dendrocygna guttata | Nettapus coromandelianus |
| 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) | 31.7 cm (12.5 in) |
| 体重 | 677.5 g (23.90 oz) | 343.5 g (12.12 oz) |
| 食性 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Feeds on aquatic invertebrates, seeds, and plant material; dabbles in shallow water; invertebrate diet peaks … |
| 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.
Cotton Pygmy-goose
Freshwater lakes, ponds, slow rivers, and rice paddies with aquatic vegetation from India east through Southeast Asia, China, and New Guinea to northern and eastern Australia. Nests in tree holes near 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.
Cotton Pygmy-goose
Male emits a rapid, clucking chatter resembling a toy rattle; female responds with soft, muffled quacks. In flight both sexes produce a distinctive whistling wing-beat.
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.
Cotton Pygmy-goose
Breeds in northern Eurasia; winters in the tropics of Africa and Asia. Migratory; routes cross through the Middle East.
保全状況
Spotted Whistling-duck
Cotton Pygmy-goose
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.
Cotton Pygmy-goose
Males white below and white-faced with dark green crown and collar; black back with iridescent green gloss; white wing bar conspicuous in flight. Females brown-gray with pale supercilium. Tiny; perches …
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。
Cotton Pygmy-goose
コットンティールは南アジアから東南アジア、オーストラリアにかけて分布する小型のカモです。白い羽毛と緑色の翼の縁が特徴的で、陸上より水上での生活が得意なカモです。蓮の葉の上を歩くことができます。水草が豊富な湖、池、水田に生息します。