カワリオオタカ vs ハクトウワシ
Accipiter hiogaster 比較対象 Haliaeetus leucocephalus
Side-by-Side Comparison
| 属性 | カワリオオタカ | ハクトウワシ |
|---|---|---|
| 学名 | Accipiter hiogaster | Haliaeetus leucocephalus |
| 目 | Accipitriformes | Accipitriformes |
| 科 | Accipitridae | Accipitridae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | 79.0 cm (31.1 in) |
| 翼開長 | 39.4 cm (15.5 in) | 203.0 cm (79.9 in) |
| 体重 | 266.25 g (9.39 oz) | 4300.0 g (151.68 oz) |
| 食性 | -- | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … |
| 一腹卵数 | 2-3 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
ハクトウワシ
Large bodies of open water including coasts, rivers, and lakes with abundant fish and old-growth trees for nesting.
Song & Call Comparison
カワリオオタカ
ハクトウワシ
High-pitched, chattering whistle: a rapid 'kleek-kik-ik-ik-ik'. Surprisingly weak and thin for such a large raptor. Also gives a lower 'kwit-kwit' call near the nest.
Geographic Range & Migration
カワリオオタカ
ハクトウワシ
North America from Alaska and Canada through the contiguous United States to northern Mexico.
保全状況
カワリオオタカ
ハクトウワシ
How to Tell Them Apart
カワリオオタカ
ハクトウワシ
Adults have a dark brown body with a striking white head and tail. Juveniles are mottled brown and white, reaching full adult plumage at age five.
Large, hooked, bright yellow bill
About These Birds
カワリオオタカ
The Variable Goshawk (<em>Accipiter hiogaster</em>) is a forest raptor belonging to the family Accipitridae, the hawks, eagles, and kites. It inhabits forest environments across a broad range encompassing the Moluccas, New Guinea, and surrounding island groups in Australasia. This species is assessed as Least Concern by the IUCN. Its common name reflects the considerable variation in plumage observed across its many island populations and subspecies. Nesting records indicate an incubation period of approximately 30 days, and clutch size typically ranges …
ハクトウワシ
ハクトウワシはアメリカ合衆国の国鳥で国の象徴である。DDT農薬使用により一度は絶滅の危機に瀕したが、見事な回復を遂げ、2007年に絶滅危惧種リストから外された。これらの力強い猛禽類は、2トンを超えるものもある鳥類最大の木の巣を作る。