American Crow vs Bismarck Crow
Corvus brachyrhynchos 比較対象 Corvus insularis
Side-by-Side Comparison
| 属性 | American Crow | Bismarck Crow |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Corvus insularis |
| 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) | 62.5 cm (24.6 in) |
| 体重 | 450.0 g (15.87 oz) | 486.0 g (17.14 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.
Bismarck Crow
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Bismarck Crow
保全状況
American Crow
Bismarck Crow
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
Bismarck Crow
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。
Bismarck Crow
The Bismarck Crow is a glossy black crow endemic to the Bismarck Archipelago and adjacent islands in Papua New Guinea. Like other crows, it is highly intelligent and omnivorous, feeding on carrion, fruits, invertebrates, and small vertebrates. It inhabits forest, forest edges, and coastal areas.