ハクトウワシ vs Common Kingfisher
Haliaeetus leucocephalus 比較対象 Alcedo atthis
Side-by-Side Comparison
| 属性 | ハクトウワシ | Common Kingfisher |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Alcedo atthis |
| 目 | Accipitriformes | Coraciiformes |
| 科 | Accipitridae | Alcedinidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 79.0 cm (31.1 in) | 17.0 cm (6.7 in) |
| 翼開長 | 203.0 cm (79.9 in) | 25.0 cm (9.8 in) |
| 体重 | 4300.0 g (151.68 oz) | 36.0 g (1.27 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Small fish, aquatic insects, and crustaceans. Hunts from a low perch over water, diving headfirst … |
| 一腹卵数 | 1-4 | 3-10 |
| 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.
Common Kingfisher
Clear, slow-flowing rivers, streams, lakes, and ponds with suitable perching and nesting banks. Requires clean water with good fish populations.
Song & Call Comparison
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.
Common Kingfisher
A sharp, penetrating 'chee' whistle given in flight, often the first indication of its presence. Short, shrill single note as it darts low over rivers. Contact call is a rippling …
Geographic Range & Migration
ハクトウワシ
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Common Kingfisher
Widespread across Europe, Asia, and North Africa. Northern populations migrate south in winter.
保全状況
ハクトウワシ
Common Kingfisher
How to Tell Them Apart
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
Common Kingfisher
Brilliant electric blue upperparts and orange underparts. Blue-green crown with darker barring. White throat patch and cheek spots. A flash of blue in flight.
Long, straight, dagger-like dark bill — orange base on the lower mandible in females
About These Birds
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。
Common Kingfisher
カワセミ（Alcedo atthis）— ユーラシアおよびアフリカに広く分布する鮮やかな青橙色の鳥。川や池のほとりで魚を捕食する。