American Crow vs Common Blackbird
Corvus brachyrhynchos 比較対象 Turdus merula
Side-by-Side Comparison
| 属性 | American Crow | Common Blackbird |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Turdus merula |
| 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) | 100.0 g (3.53 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Earthworms, insects, berries, and fruit. Forages on the ground, turning over leaf litter. Famously pulls … |
| 一腹卵数 | 3-7 | 3-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Common Blackbird
Woodland, hedgerows, gardens, and parks. One of the most common garden birds across Europe.
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.
Common Blackbird
Arguably Britain's finest songster: rich, flute-like phrases with deep, mellow quality. Sings persistently at dusk. Alarm is a sharp 'chook-chook'. Song includes liquid 'pew' notes.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Common Blackbird
Europe, Asia, and North Africa. Introduced to Australia and New Zealand. Northern populations are migratory.
保全状況
American Crow
Common Blackbird
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
Common Blackbird
Males are jet black with a bright yellow-orange bill and eye-ring. Females are dark brown with mottled underparts and a dull yellowish bill.
Bright yellow-orange bill in males, dull brownish in females
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。
Common Blackbird
クロウタドリ（Turdus merula）— ヨーロッパに広く分布するツグミ科の鳥。オスは全身黒く黄色い嘴をもち、メスは茶色。庭園や森林に生息し、美しい歌声をもつ。