American Crow vs American Robin
Corvus brachyrhynchos 比較対象 Turdus migratorius
Side-by-Side Comparison
| 属性 | American Crow | American Robin |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Turdus migratorius |
| 目 | Passeriformes | Passeriformes |
| 科 | Corvidae | Turdidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 45.0 cm (17.7 in) | 25.0 cm (9.8 in) |
| 翼開長 | 99.0 cm (39.0 in) | 36.0 cm (14.2 in) |
| 体重 | 450.0 g (15.87 oz) | 77.0 g (2.72 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Earthworms, insects, and fruit. Famously hunts earthworms on lawns by running, stopping, and tilting its … |
| 一腹卵数 | 3-7 | 2-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
American Robin
Lawns, parks, gardens, farmland, and forest edges. One of the most familiar birds in suburban North America.
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.
American Robin
A clear, caroling song of 2-3 note phrases: 'cheerily, cheer-up, cheerio'. Sings from dawn perches. Sharp 'tut-tut-tut' alarm call and thin 'seeee' flight note.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
American Robin
North America from Alaska and Canada to Mexico. Northern populations migrate south in winter; southern populations are largely resident.
保全状況
American Crow
American Robin
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
American Robin
Dark grey-brown upperparts with a warm brick-red breast and belly. White eye-ring and streaked white throat. Female slightly paler.
Bright yellow bill with a dark tip
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。
American Robin
北米全域に分布し、春の訪れを告げる鳥として知られるツグミ（体長23〜28cm）。オレンジ色の腹と黒い頭部が特徴的。Turdus migratorius（アメリカコマツグミ）は北米最も親しまれた野鳥の一つで、芝生でミミズを引き抜く姿が日常風景として親しまれている。連邦政府と各州で厳重に保護されており、3州の州鳥に指定されている。Turdidae科。