American Crow vs European Goldfinch
Corvus brachyrhynchos 比較対象 Carduelis carduelis
Side-by-Side Comparison
| 属性 | American Crow | European Goldfinch |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Carduelis carduelis |
| 目 | Passeriformes | Passeriformes |
| 科 | Corvidae | Fringillidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 45.0 cm (17.7 in) | 13.0 cm (5.1 in) |
| 翼開長 | 99.0 cm (39.0 in) | 23.0 cm (9.1 in) |
| 体重 | 450.0 g (15.87 oz) | 16.0 g (0.56 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Seeds, especially thistle (Carduus) and teasel seeds, extracted with its precise tweezer-like bill. Also takes … |
| 一腹卵数 | 3-7 | 4-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
European Goldfinch
Open woodland, orchards, gardens, parks, and weedy fields with seed-bearing plants. Common at garden bird feeders.
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.
European Goldfinch
A liquid, tinkling 'swit-swit-swit' in flight and a melodic twittering song. Flocks produce a bright jingling chorus. Male song is a sweet repetitive warble incorporating the flight call.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
European Goldfinch
Europe, North Africa, and western Asia. Introduced to Australia, New Zealand, and parts of South America.
保全状況
American Crow
European Goldfinch
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
European Goldfinch
Crimson red face with white cheeks and a black crown. Sandy-brown back with a bright yellow wing bar visible in flight. Black and white tail.
Slender, pointed, ivory-pink bill adapted for extracting seeds from thistles
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。
European Goldfinch
ルネサンス絵画に頻繁に描かれたヒワで、「チャーム」（魅力）と呼ばれる群れを形成する。