American Crow vs Red-crowned Crane
Corvus brachyrhynchos 比較対象 Grus japonensis
Side-by-Side Comparison
| 属性 | American Crow | Red-crowned Crane |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Grus japonensis |
| 目 | Passeriformes | Gruiformes |
| 科 | Corvidae | Gruidae |
| 保全状況 | Least Concern | Endangered |
| 体長 | 45.0 cm (17.7 in) | 150.0 cm (59.1 in) |
| 翼開長 | 99.0 cm (39.0 in) | 250.0 cm (98.4 in) |
| 体重 | 450.0 g (15.87 oz) | 8900.0 g (313.94 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Omnivorous — fish, amphibians, insects, grasses, and waste grain. Forages in wetlands and agricultural fields. |
| 一腹卵数 | 3-7 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Red-crowned Crane
Freshwater marshes, bogs, and wet grasslands for breeding. Winters in coastal mudflats, estuaries, and rice paddies.
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.
Red-crowned Crane
Spectacular unison 'bugling' call: a clear, resonant, far-carrying trumpet 'kru-ru-ru' given by paired birds simultaneously. Among the most majestic bird calls in Asia.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Red-crowned Crane
Eastern Asia — breeds in northeastern China, southeastern Russia, and Hokkaido, Japan. Winters in Korea and eastern China.
保全状況
American Crow
Red-crowned Crane
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
Red-crowned Crane
White body plumage with black secondary flight feathers and throat. Bare red crown patch. Black face and neck. One of the most elegant crane species.
Long, straight, olive-green bill
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。
Red-crowned Crane
The red-crowned crane is one of the rarest crane species and a potent symbol of longevity and fidelity in East Asian culture. Their elaborate unison call and dancing displays have inspired art and folklore for millennia. The resident population on Hokkaido, Japan, recovered from about 33 birds in 1952 to over 1,800 today.