Trumpeter Swan vs Wandering Whistling-duck
Cygnus buccinator 比較対象 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | Trumpeter Swan | Wandering Whistling-duck |
|---|---|---|
| 学名 | Cygnus buccinator | Dendrocygna arcuata |
| 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) | 37.2 cm (14.6 in) |
| 体重 | 9975.0 g (351.86 oz) | 779.5 g (27.50 oz) |
| 食性 | Dabbles for seeds, invertebrates, and aquatic plants in shallow water; diet shifts between plant-rich and … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 一腹卵数 | 1-9 | 6-15 |
| 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.
Wandering Whistling-duck
Tropical freshwater marshes, flooded grasslands, swamps, and lake margins from the Philippines and Indonesia through Papua New Guinea to northern and eastern Australia. Nomadic following wet season flooding.
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.
Wandering Whistling-duck
A soft whistle 'whi-whi-whi' in flight. Less vocal than other whistling-ducks; flocks tend to be quieter. Given at dawn and dusk during flight to roosting or feeding areas.
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.
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
保全状況
Trumpeter Swan
Wandering 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.
Wandering Whistling-duck
Rich chestnut-brown head and neck; dark brown back. Flanks rufous with pale buff streaks and dark spots. Belly blackish. Long, dark pinkish legs. Upright posture typical of whistling-ducks. 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。
Wandering Whistling-duck
ワンデリングウィスリングダックは東南アジアからオーストラリアにかけて分布するツリーダックです。栗色の羽毛と長い首が特徴で、群れで移動します。湿地、稲田、水草に覆われた湖に生息し、水草、種子、藻類を採食します。