ハクトウワシ vs Blue Jay
Haliaeetus leucocephalus 比較対象 Cyanocitta cristata
Side-by-Side Comparison
| 属性 | ハクトウワシ | Blue Jay |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Cyanocitta cristata |
| 目 | Accipitriformes | Passeriformes |
| 科 | Accipitridae | Corvidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 79.0 cm (31.1 in) | 28.0 cm (11.0 in) |
| 翼開長 | 203.0 cm (79.9 in) | 42.0 cm (16.5 in) |
| 体重 | 4300.0 g (151.68 oz) | 87.0 g (3.07 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Omnivorous — nuts (especially acorns), seeds, berries, insects, and occasionally eggs or nestlings of other … |
| 一腹卵数 | 1-4 | 2-7 |
| 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.
Blue Jay
Deciduous and mixed forests, parks, and suburban areas. Highly adaptable to human-modified landscapes.
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.
Blue Jay
A harsh, ringing 'jaay-jaay-jaay'. Also mimics Red-tailed Hawk and other species convincingly. Gives soft, liquid 'bell' calls and gurgling whispers in flocks.
Geographic Range & Migration
ハクトウワシ
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Blue Jay
Eastern and central North America from southern Canada to the Gulf Coast. Some populations migrate irregularly.
保全状況
ハクトウワシ
Blue Jay
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
Blue Jay
Bright blue upperparts with black barring on the wings and tail. White face and underparts with a black necklace. Prominent blue crest.
Stout, straight black bill