ハクトウワシ vs Common Ostrich
Haliaeetus leucocephalus 比較対象 Struthio camelus
Side-by-Side Comparison
| 属性 | ハクトウワシ | Common Ostrich |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Struthio camelus |
| 目 | Accipitriformes | Struthioniformes |
| 科 | Accipitridae | Struthionidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 79.0 cm (31.1 in) | 210.0 cm (82.7 in) |
| 翼開長 | 203.0 cm (79.9 in) | 200.0 cm (78.7 in) |
| 体重 | 4300.0 g (151.68 oz) | 100000.0 g (3527.40 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Omnivorous — plants, seeds, roots, flowers, insects, and small vertebrates. Swallows pebbles to aid digestion … |
| 一腹卵数 | 1-4 | 2-11 |
| 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 Ostrich
Open arid and semi-arid habitats including savannas, Sahel, and dry woodlands across Africa.
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 Ostrich
Male produces a surprisingly deep, resonant booming roar — remarkably lion-like. Also gives whistling and hissing sounds. Females and chicks emit softer grunts and squeaks.
Geographic Range & Migration
ハクトウワシ
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Common Ostrich
Sub-Saharan Africa. Formerly also found in the Middle East and parts of Asia. Farmed worldwide.
保全状況
ハクトウワシ
Common Ostrich
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 Ostrich
Males have black body plumage with white wing and tail feathers. Females and immatures are grey-brown. Bare skin on the neck and thighs varies from pink to blue.
Broad, flat bill adapted for an omnivorous diet
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 Ostrich
ダチョウ（Struthio camelus）— 世界最大の鳥でアフリカのサバンナに生息する。飛べないが時速70kmで走ることができ、世界最大の卵を産む。