Bufflehead vs Spotted Whistling-duck
Bucephala albeola 比較対象 Dendrocygna guttata
Side-by-Side Comparison
| 属性 | Bufflehead | Spotted Whistling-duck |
|---|---|---|
| 学名 | Bucephala albeola | Dendrocygna guttata |
| 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) | 41.3 cm (16.3 in) |
| 体重 | 400.5 g (14.13 oz) | 677.5 g (23.90 oz) |
| 食性 | Dives for aquatic insects, crustaceans, and small molluscs in freshwater and coastal habitats. One of … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 一腹卵数 | 5-14 | 10-11 |
| 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.
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.
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
Bufflehead
Breeds in boreal forest of western and central North America. Winters along both coasts and interior lakes from southern Canada south 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
Bufflehead
Spotted 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 …
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
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。
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。