Common Raven vs Rook
Corvus corax 比較対象 Corvus frugilegus
Side-by-Side Comparison
| 属性 | Common Raven | Rook |
|---|---|---|
| 学名 | Corvus corax | Corvus frugilegus |
| 目 | Passeriformes | Passeriformes |
| 科 | Corvidae | Corvidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 63.0 cm (24.8 in) | — |
| 翼開長 | 130.0 cm (51.2 in) | 62.5 cm (24.6 in) |
| 体重 | 1200.0 g (42.33 oz) | 451.8333333333333 g (15.94 oz) |
| 食性 | Omnivorous and opportunistic — carrion, small animals, insects, eggs, grain, fruit, and human refuse. Among … | -- |
| 一腹卵数 | 1-8 | 2-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Common Raven
Diverse habitats from Arctic tundra to deserts, mountains, forests, and coastlines. Avoids dense urban areas but thrives near human activity.
Song & Call Comparison
Common Raven
Highly varied: deep resonant 'kraa-kraa-kraa', hollow 'tok-tok', liquid 'klonk', and wing-whooshing. Among the most intelligent corvid callers; uses calls contextually in groups.
Rook
Geographic Range & Migration
Common Raven
Holarctic distribution across North America, Europe, Asia, and North Africa. The most widely distributed corvid.
Rook
保全状況
Common Raven
Rook
How to Tell Them Apart
Common Raven
All black with a glossy purplish-blue iridescent sheen. Shaggy throat hackles, long wedge-shaped tail, and large robust build distinguish it from crows.
Large, powerful, curved black bill
Rook
About These Birds
Common Raven
ワタリガラス（Corvus corax）— 北半球に広く分布する最大のスズメ目の鳥。高い知性をもち、道具を使うことや問題解決能力が知られている。
Rook
ヨーロッパから中央アジアにかけて分布するカラス（体長44〜46cm）。光沢のある黒い羽毛と裸の白い嘴基部が特徴（成鳥）。Corvus frugilegus（ミヤマガラス）は木の上に大きなコロニーを作って繁殖する社会性の高いカラスで、農地を歩いてミミズや穀物を食べる。日本にも冬季に渡来する。Corvidae科。