American Crow vs Downy Woodpecker
Corvus brachyrhynchos 比較対象 Picoides pubescens
Side-by-Side Comparison
| 属性 | American Crow | Downy Woodpecker |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Picoides pubescens |
| 目 | Passeriformes | Piciformes |
| 科 | Corvidae | Picidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 45.0 cm (17.7 in) | 16.0 cm (6.3 in) |
| 翼開長 | 99.0 cm (39.0 in) | 28.0 cm (11.0 in) |
| 体重 | 450.0 g (15.87 oz) | 27.0 g (0.95 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Insects and larvae extracted from bark, supplemented with seeds, berries, and suet at feeders. Often … |
| 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.
Downy Woodpecker
Deciduous and mixed forests, orchards, parks, and suburban areas. The most common woodpecker at feeders in 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.
Downy Woodpecker
A sharp 'pik' or 'peek' contact call. Drums on resonant branches with a rapid, light tattoo — softer than larger woodpeckers. Also gives a high descending whinny 'keeer-keeer'.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Downy Woodpecker
North America from Alaska and Canada south through the United States, excluding the arid Southwest.
保全状況
American Crow
Downy Woodpecker
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
Downy Woodpecker
Black and white plumage with a broad white stripe down the back. Black wings with white spots. Males have a small red patch on the nape.
Short, chisel-shaped, dark bill — noticeably shorter than the similar hairy woodpecker
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。
Downy Woodpecker
The downy woodpecker is the smallest and most widespread woodpecker in North America. Its small size allows it to forage on thin branches and weed stems that larger woodpeckers cannot access. Downies often join mixed-species flocks in winter, benefiting from the extra vigilance of multiple species watching for predators.