American Crow vs Atlantic Puffin
Corvus brachyrhynchos 比較対象 Fratercula arctica
Side-by-Side Comparison
| 属性 | American Crow | Atlantic Puffin |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Fratercula arctica |
| 目 | Passeriformes | Charadriiformes |
| 科 | Corvidae | Alcidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | 45.0 cm (17.7 in) | 30.0 cm (11.8 in) |
| 翼開長 | 99.0 cm (39.0 in) | 56.0 cm (22.0 in) |
| 体重 | 450.0 g (15.87 oz) | 380.0 g (13.40 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Small fish, especially sand eels, herring, and capelin. Dives underwater using wings for propulsion, catching … |
| 一腹卵数 | 3-7 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Atlantic Puffin
Breeds on grassy cliff tops and offshore islands. Spends winter entirely at sea in the North Atlantic.
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.
Atlantic Puffin
At burrow gives a low, moaning 'arr-arr-arr' growl. Silent at sea. At breeding colonies produces a series of grunting croaks. Chicks give soft peeping calls.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Atlantic Puffin
North Atlantic from eastern Canada and northeastern United States to Iceland, Norway, and northwest Russia.
保全状況
American Crow
Atlantic Puffin
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
Atlantic Puffin
Black upperparts and white underparts with a distinctive white face. In breeding season, the face brightens and colourful bill plates develop. Winter plumage is duller with a darker face.
Large, laterally compressed, triangular bill — bright orange, blue, and yellow in breeding season
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。
Atlantic Puffin
「海のピエロ」とも呼ばれるニシツノメドリは、北海の崖に穴を掘って営巣する魅力的な海鳥。口蓋に後ろ向きの棘があるため、一度に12匹もの魚を横向きにくわえて運ぶことができる。気候変動と乱獲による餌不足が脅威となり、個体数が減少している。