Whooper Swan vs Wandering Whistling-duck
Cygnus cygnus 比較対象 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | Whooper Swan | Wandering Whistling-duck |
|---|---|---|
| 学名 | Cygnus cygnus | Dendrocygna arcuata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 116.4 cm (45.8 in) | 37.2 cm (14.6 in) |
| 体重 | 10350.0 g (365.09 oz) | 779.5 g (27.50 oz) |
| 食性 | Dabbling duck feeding on seeds, aquatic insects, and plant material; forages in shallow wetlands; diet … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 一腹卵数 | 2-12 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
Whooper Swan only
Wandering Whistling-duck only
None
Whooper Swan
Breeds on boreal and subarctic lakes and boggy pools from Iceland and Scandinavia across northern Eurasia to Siberia. Winters on large lakes, estuaries, rivers, and agricultural fields in northwestern Europe and eastern Asia.
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
Whooper Swan
A loud, ringing 'wh-OOH-wh-OOH' bugle. Less high-pitched than Trumpeter; similar to Tundra Swan but deeper. Pairs call in musical antiphony. Carries very far over water.
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
Whooper Swan
Breeds in Arctic tundra from Siberia to western Canada; winters along the Pacific coast from British Columbia 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
Whooper Swan
Wandering Whistling-duck
How to Tell Them Apart
Whooper Swan
All-white plumage. Long yellow bill with large wedge-shaped yellow patch extending past nostrils, contrasting with black tip. Long flat head profile. Holds neck erect and straight. Juveniles pale gray-brown.
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
Whooper Swan
北ヨーロッパ・アジアで繁殖し、南方で越冬する大型のハクチョウ（体長140〜165cm）。純白の体と黄色が多い嘴が特徴。Cygnus cygnus（オオハクチョウ）は日本では北海道の阿寒湖、本州の猪苗代湖など各地の越冬地で見られ、ワシントン条約（CITES）とアフリカ・ユーラシア渡り性水鳥の保全に関する協定（AEWA）で保護されている。Anatidae科。
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。