American Crow vs Great Blue Heron
Corvus brachyrhynchos 比較対象 Ardea herodias
Side-by-Side Comparison
| 属性 | American Crow | Great Blue Heron |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Ardea herodias |
| 目 | Passeriformes | Pelecaniformes |
| 科 | Corvidae | Ardeidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 45.0 cm (17.7 in) | 117.0 cm (46.1 in) |
| 翼開長 | 99.0 cm (39.0 in) | 183.0 cm (72.0 in) |
| 体重 | 450.0 g (15.87 oz) | 2400.0 g (84.66 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Primarily fish, also frogs, snakes, small mammals, insects, and other birds. Hunts by standing motionless … |
| 一腹卵数 | 3-7 | 2-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Great Blue Heron
Wetlands of all types including marshes, swamps, riverbanks, lake edges, and coastal shores. Also hunts in fields and meadows.
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.
Great Blue Heron
Deep, harsh, croaking 'frahnk-frahnk' call in flight. Also gives low guttural grunts at the nest. Alarmed birds give repeated croaks. Mostly silent for such a large wader.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Great Blue Heron
North and Central America from Alaska and southern Canada to the Caribbean and Galapagos Islands.
保全状況
American Crow
Great Blue Heron
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
Great Blue Heron
Blue-grey body with a white head bearing a broad black stripe extending to a long black plume. Rufous-brown thighs. In flight, the neck is folded into an S-shape.
Long, dagger-like yellowish bill
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。
Great Blue Heron
The great blue heron is the largest heron in North America, standing up to 1.4 meters tall. These patient hunters can stand motionless for extended periods before striking at prey with remarkable speed. They nest in large colonies called heronries, often returning to the same site year after year.