ハクトウワシ vs Barn Owl
Haliaeetus leucocephalus 比較対象 Tyto alba
Side-by-Side Comparison
| 属性 | ハクトウワシ | Barn Owl |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Tyto alba |
| 目 | Accipitriformes | Strigiformes |
| 科 | Accipitridae | Tytonidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 79.0 cm (31.1 in) | 35.0 cm (13.8 in) |
| 翼開長 | 203.0 cm (79.9 in) | 90.0 cm (35.4 in) |
| 体重 | 4300.0 g (151.68 oz) | 350.0 g (12.35 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Almost exclusively small mammals, especially voles and mice. Hunts using extraordinary hearing to locate prey … |
| 一腹卵数 | 1-4 | 2-16 |
| 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.
Barn Owl
Open farmland, grasslands, and marshes. Nests in barns, church steeples, tree cavities, and purpose-built nest boxes.
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.
Barn Owl
An eerie, drawn-out rasping shriek 'shreeeeee' — not a hoot. Also gives hissing, snoring, and bill-snapping when disturbed. Chicks call with a persistent rasping hunger call.
Geographic Range & Migration
ハクトウワシ
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Barn Owl
The most widespread owl and one of the most widespread land birds, found on every continent except Antarctica.
保全状況
ハクトウワシ
Barn Owl
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
Barn Owl
Pale golden-buff upperparts with delicate grey mottling. Pure white heart-shaped face and white to pale buff underparts. Ghostly white appearance in flight.
Pale pinkish hooked bill nearly concealed by the facial disc