Blue Jay vs Banggai Crow
Cyanocitta cristata 比較対象 Corvus unicolor
Side-by-Side Comparison
| 属性 | Blue Jay | Banggai Crow |
|---|---|---|
| 学名 | Cyanocitta cristata | Corvus unicolor |
| 目 | Passeriformes | Passeriformes |
| 科 | Corvidae | Corvidae |
| 保全状況 | Least Concern | Critically Endangered |
| 体長 | 28.0 cm (11.0 in) | — |
| 翼開長 | 42.0 cm (16.5 in) | 40.2 cm (15.8 in) |
| 体重 | 87.0 g (3.07 oz) | 175.0 g (6.17 oz) |
| 食性 | Omnivorous — nuts (especially acorns), seeds, berries, insects, and occasionally eggs or nestlings of other … | -- |
| 一腹卵数 | 2-7 | 1-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Blue Jay
Deciduous and mixed forests, parks, and suburban areas. Highly adaptable to human-modified landscapes.
Song & Call Comparison
Blue Jay
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.
Banggai Crow
Geographic Range & Migration
Blue Jay
Eastern and central North America from southern Canada to the Gulf Coast. Some populations migrate irregularly.
Banggai Crow
保全状況
Blue Jay
Banggai Crow
How to Tell Them Apart
Blue Jay
Bright blue upperparts with black barring on the wings and tail. White face and underparts with a black necklace. Prominent blue crest.
Stout, straight black bill
Banggai Crow
About These Birds
Blue Jay
アオカケスは鮮やかな羽毛と大きな鳴き声で知られるカラス科の大胆で知能が高い鳥。アオカケスは毎秋数千個のドングリを蓄えることでカシの木の重要な散布者となっている。複雑な社会的行動には、給餌器から他の鳥を追い払うためにタカの声を真似ることも含まれる。
Banggai Crow
The Banggai Crow is a Critically Endangered corvid of the family Corvidae found only on Peleng Island in Indonesia. Weighing about 175g with a wingspan of 40.2cm, it is a large all-black crow restricted to one of the world's smallest ranges for any corvid. Deforestation and hunting have reduced its population to critically low numbers.