American Crow vs Black-collared Jay
Corvus brachyrhynchos 比較対象 Cyanolyca armillata
Side-by-Side Comparison
| 属性 | American Crow | Black-collared Jay |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Cyanolyca armillata |
| 目 | Passeriformes | Passeriformes |
| 科 | Corvidae | Corvidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 45.0 cm (17.7 in) | — |
| 翼開長 | 99.0 cm (39.0 in) | 27.7 cm (10.9 in) |
| 体重 | 450.0 g (15.87 oz) | 168.33333333333334 g (5.94 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | -- |
| 一腹卵数 | 3-7 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Song & Call Comparison
American Crow
Classic 'caw-caw-caw' repeated in series. Family groups use distinct dialects. Also gives rattling, knocking, and a short 'cah' flight call. Highly social and vocal.
Black-collared Jay
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Black-collared Jay
保全状況
American Crow
Black-collared Jay
How to Tell Them Apart
American Crow
All black with a slight glossy sheen. Squared-off tail and smooth throat distinguish it from the common raven.
Straight, sturdy black bill smaller than a raven's
Black-collared Jay
About These Birds
American Crow
北米全域に広く分布する大型のカラス（体長40〜53cm）。全身光沢のある黒で、知性が高く強い社会性を持つ。Corvus brachyrhynchos（アメリカガラス）は北米で最もよく見られるカラスで、交通量の多い道路に堅い木の実を置いて車に割らせる「道具使用」が観察されている。Corvidae科。
Black-collared Jay
The Black-collared Jay is a striking, medium-sized jay of Andean cloud forests in Colombia, Ecuador, Venezuela, and Peru, with deep blue plumage, a black head, and a distinctive narrow black collar. It inhabits the canopy and edges of humid montane forests at elevations between 1,500 and 3,000 meters. It feeds on insects, berries, small vertebrates, and eggs.