Bufflehead vs Wandering Whistling-duck
Bucephala albeola 比較対象 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | Bufflehead | Wandering Whistling-duck |
|---|---|---|
| 学名 | Bucephala albeola | Dendrocygna arcuata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 32.2 cm (12.7 in) | 37.2 cm (14.6 in) |
| 体重 | 400.5 g (14.13 oz) | 779.5 g (27.50 oz) |
| 食性 | Dives for aquatic insects, crustaceans, and small molluscs in freshwater and coastal habitats. One of … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 一腹卵数 | 5-14 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
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
Bufflehead
Male produces a soft, squeaky whistle; female gives a harsh, nasal quack. The male's thin, reedy whistle is barely audible; pairs exchange quiet contact calls at boreal forest ponds.
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
Bufflehead
Breeds in boreal forest of western and central North America. Winters along both coasts and interior lakes from southern Canada south 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
Bufflehead
Wandering Whistling-duck
How to Tell Them Apart
Bufflehead
Male has iridescent green-purple head with a large triangular white patch from behind eye over crown; body clean white except for black back. Female is dark sooty-brown with a single …
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
Bufflehead
北米最小の潜水ガモ（約400g）、アナチダエ科、雄は大きな白い頭部斑を持つ虹彩色の紫緑の頭部。池や湖の近くの林に繁殖し、キツツキの穴に巣を作る；沿岸の湾と内陸の水域で越冬する。水生無脊椎動物と小魚を食べる。個体数が安定した軽度懸念種。
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。