Barn Owl vs Eastern Bluebird
Tyto alba 比較対象 Sialia sialis
Side-by-Side Comparison
| 属性 | Barn Owl | Eastern Bluebird |
|---|---|---|
| 学名 | Tyto alba | Sialia sialis |
| 目 | Strigiformes | Passeriformes |
| 科 | Tytonidae | Turdidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 35.0 cm (13.8 in) | 17.5 cm (6.9 in) |
| 翼開長 | 90.0 cm (35.4 in) | 27.0 cm (10.6 in) |
| 体重 | 350.0 g (12.35 oz) | 31.0 g (1.09 oz) |
| 食性 | Almost exclusively small mammals, especially voles and mice. Hunts using extraordinary hearing to locate prey … | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … |
| 一腹卵数 | 2-16 | 4-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Barn Owl
Open farmland, grasslands, and marshes. Nests in barns, church steeples, tree cavities, and purpose-built nest boxes.
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
Song & Call Comparison
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.
Eastern Bluebird
A rich, melodious warbled 'chur-wi, tur-a-lee' song. Both sexes sing. Call is a soft, musical 'turee'. Song is gentle and flute-like, suggesting a small thrush. Given from exposed perch.
Geographic Range & Migration
Barn Owl
The most widespread owl and one of the most widespread land birds, found on every continent except Antarctica.
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
保全状況
Barn Owl
Eastern Bluebird
How to Tell Them Apart
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
Eastern Bluebird
Males are vivid royal blue above with a rusty-red breast and white belly. Females are grey-blue with a paler rust breast.
Short, thin, dark bill
About These Birds
Barn Owl
メンフクロウはあらゆるフクロウの中で最も非対称な耳を持ち、動物界最高の聴覚的方向定位能力を誇る。完全な暗闇の中でも音だけで獲物を捕まえることができる。特徴的なハート形の顔は放物線状の皿として機能し、ずれた両耳に音を集める。
Eastern Bluebird
北米に生息するヒタキで、青い上面とオレンジ色の胸を持つ。巣箱の設置プログラムにより個体数が回復した。