Northern Pintail vs Spotted Whistling-duck
Anas acuta 比較対象 Dendrocygna guttata
Side-by-Side Comparison
| 属性 | Northern Pintail | Spotted Whistling-duck |
|---|---|---|
| 学名 | Anas acuta | Dendrocygna guttata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 51.3 cm (20.2 in) | 41.3 cm (16.3 in) |
| 体重 | 912.75 g (32.20 oz) | 677.5 g (23.90 oz) |
| 食性 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow water; diet dominated by hard-shelled benthic … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 一腹卵数 | 3-12 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Northern Pintail
Breeds on shallow prairie wetlands, tundra ponds, and arctic meadows. Winters on coastal estuaries, lagoons, rice paddies, and agricultural fields across Europe, Asia, Africa, and North America. Highly migratory.
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
Northern Pintail
Male produces a low, mellow whistle; female gives a hoarse, nasal quack. The male's soft, flute-like call is one of the most distinctive sounds of northern wetlands in spring.
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
Northern Pintail
Breeds in Arctic Canada, Alaska, and Greenland; winters along the coasts of the North Atlantic from Labrador to West Africa.
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
Northern Pintail
Spotted Whistling-duck
How to Tell Them Apart
Northern Pintail
Breeding males have chocolate-brown head; white neck stripe extending to breast; gray flanks with long pointed central tail feathers. Females mottled brown with pointed tail and gray bill. Elegant and …
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
Northern Pintail
北半球全域で繁殖し、南方で越冬する優雅なカモ（体長50〜76cm）。雄は茶色の頭と長い針状の尾が特徴的。Anas acuta（オナガガモ）は北極圏から温帯まで幅広い湿地で繁殖し、アジア、ヨーロッパ、北米で越冬する長距離渡り鳥。日本の冬の湖沼や河川に多く飛来する。Anatidae科。
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。