Blue Jay vs Grey Crow
Cyanocitta cristata 比較対象 Corvus tristis
Side-by-Side Comparison
| 属性 | Blue Jay | Grey Crow |
|---|---|---|
| 学名 | Cyanocitta cristata | Corvus tristis |
| 目 | Passeriformes | Passeriformes |
| 科 | Corvidae | Corvidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 28.0 cm (11.0 in) | — |
| 翼開長 | 42.0 cm (16.5 in) | 64.9 cm (25.6 in) |
| 体重 | 87.0 g (3.07 oz) | 635.0 g (22.40 oz) |
| 食性 | Omnivorous — nuts (especially acorns), seeds, berries, insects, and occasionally eggs or nestlings of other … | -- |
| 一腹卵数 | 2-7 | 2 |
| Population Trend | — | — |
Size Comparison
Body Length
Blue Jay
28.0 cm
Grey Crow
—
翼開長
Blue Jay
42.0 cm
Grey Crow
64.9 cm
体重
Blue Jay
87.0 g
Grey Crow
635.0 g
Habitat Comparison
Blue Jay
Deciduous and mixed forests, parks, and suburban areas. Highly adaptable to human-modified landscapes.
Song & Call Comparison
Blue Jay
さえずり
A harsh, ringing 'jaay-jaay-jaay'. Also mimics Red-tailed Hawk and other species convincingly. Gives soft, liquid 'bell' calls and gurgling whispers in flocks.
Grey Crow
Geographic Range & Migration
Blue Jay
Eastern and central North America from southern Canada to the Gulf Coast. Some populations migrate irregularly.
Grey Crow
保全状況
Least Concern
Blue Jay
Least Concern
Grey Crow
How to Tell Them Apart
Blue Jay
羽毛
Bright blue upperparts with black barring on the wings and tail. White face and underparts with a black necklace. Prominent blue crest.
くちばし
Stout, straight black bill