Transvolcanic Jay vs Common Raven
Aphelocoma ultramarina 比較対象 Corvus corax
Side-by-Side Comparison
| 属性 | Transvolcanic Jay | Common Raven |
|---|---|---|
| 学名 | Aphelocoma ultramarina | Corvus corax |
| 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 | 33.2 cm (13.1 in) | 130.0 cm (51.2 in) |
| 体重 | 129.0 g (4.55 oz) | 1200.0 g (42.33 oz) |
| 食性 | -- | Omnivorous and opportunistic — carrion, small animals, insects, eggs, grain, fruit, and human refuse. Among … |
| 一腹卵数 | 4 | 1-8 |
| Population Trend | — | — |
Size Comparison
Body Length
Transvolcanic Jay
—
Common Raven
63.0 cm
翼開長
Transvolcanic Jay
33.2 cm
Common Raven
130.0 cm
体重
Transvolcanic Jay
129.0 g
Common Raven
1200.0 g
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
Transvolcanic Jay
Common Raven
さえずり
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.
Geographic Range & Migration
Transvolcanic Jay
Common Raven
Holarctic distribution across North America, Europe, Asia, and North Africa. The most widely distributed corvid.
保全状況
Least Concern
Transvolcanic Jay
Least Concern
Common Raven
How to Tell Them Apart
Transvolcanic Jay
Common Raven
羽毛
All black with a glossy purplish-blue iridescent sheen. Shaggy throat hackles, long wedge-shaped tail, and large robust build distinguish it from crows.
くちばし
Large, powerful, curved black bill
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。