Common Raven vs Azure Jay
Corvus corax 比較対象 Cyanocorax coeruleus
Side-by-Side Comparison
| 属性 | Common Raven | Azure Jay |
|---|---|---|
| 学名 | Corvus corax | Cyanocorax coeruleus |
| 目 | Passeriformes | Passeriformes |
| 科 | Corvidae | Corvidae |
| 保全状況 | Least Concern | Near Threatened |
| 体長 | 63.0 cm (24.8 in) | — |
| 翼開長 | 130.0 cm (51.2 in) | 39.1 cm (15.4 in) |
| 体重 | 1200.0 g (42.33 oz) | 272.0 g (9.59 oz) |
| 食性 | Omnivorous and opportunistic — carrion, small animals, insects, eggs, grain, fruit, and human refuse. Among … | -- |
| 一腹卵数 | 1-8 | 4 |
| 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.
Azure Jay
Geographic Range & Migration
Common Raven
Holarctic distribution across North America, Europe, Asia, and North Africa. The most widely distributed corvid.
Azure Jay
保全状況
Common Raven
Azure Jay
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
Azure Jay
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。
Azure Jay
The Azure Jay is a Near Threatened corvid endemic to the Atlantic Forest of Brazil and Argentina, weighing about 272g with a wingspan of 39.1cm. It is one of the largest and most striking blue jays, with uniformly vivid azure plumage. It lives in small social groups and feeds on fruit, invertebrates, and small vertebrates.