Trumpeter Swan vs Spotted Whistling-duck
Cygnus buccinator 比較対象 Dendrocygna guttata
Side-by-Side Comparison
| 属性 | Trumpeter Swan | Spotted Whistling-duck |
|---|---|---|
| 学名 | Cygnus buccinator | Dendrocygna guttata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 125.1 cm (49.3 in) | 41.3 cm (16.3 in) |
| 体重 | 9975.0 g (351.86 oz) | 677.5 g (23.90 oz) |
| 食性 | Dabbles for seeds, invertebrates, and aquatic plants in shallow water; diet shifts between plant-rich and … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 一腹卵数 | 1-9 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Trumpeter Swan
Large deep-water lakes, slow rivers, and wetland complexes in western and interior North America from Alaska and Canada south to Oregon. Winters on ice-free rivers and coastal estuaries.
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
Trumpeter Swan
A deep, resonant, French-horn-like bugling 'oh-OH-oh'. The most musical of North American swans. Pairs sing in duet. Very different from the thin whistle of smaller swans.
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.
Geographic Range & Migration
Trumpeter Swan
Breeds in Alaska and northern Canada; winters along the Pacific and Atlantic coasts from the southern United States to Mexico.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
保全状況
Trumpeter Swan
Spotted Whistling-duck
How to Tell Them Apart
Trumpeter Swan
Entirely snow-white plumage in adults. All-black bill lacking yellow patch. Large size; heaviest North American bird. Neck held straight. Juveniles gray-brown, becoming white by second year. Sexes similar.
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.
About These Birds
Trumpeter Swan
トランペッタースワンは北米に分布する最大級のハクチョウです。全身が白く、嘴は黒く黄色の模様がありません。北米西部の湖、川、湿地に生息し、水草、根、農作物を採食します。乱獲により一時絶滅の危機に瀕しましたが、保全活動で回復しています。
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。