American Crow vs Snowy Owl
Corvus brachyrhynchos 对比 Bubo scandiacus
Side-by-Side Comparison
| 属性 | American Crow | Snowy Owl |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Bubo scandiacus |
| 目 | Passeriformes | Strigiformes |
| 科 | Corvidae | Strigidae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | 45.0 cm (17.7 in) | 63.0 cm (24.8 in) |
| 翼展 | 99.0 cm (39.0 in) | 145.0 cm (57.1 in) |
| 体重 | 450.0 g (15.87 oz) | 2100.0 g (74.08 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. … |
| 产卵数 | 3-7 | 3-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Snowy Owl
Arctic tundra for breeding. Winters in open habitats resembling tundra, including prairies, airports, shorelines, and agricultural fields.
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.
Snowy Owl
Male gives a deep booming hoot 'hooooo' and a rising 'hoo-hoo' series. Also barks sharply when alarmed. Quieter than many owls; silent during long Arctic winter hunts.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Snowy Owl
Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.
保护状况
American Crow
Snowy Owl
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
Snowy Owl
Adult males are almost entirely white. Females and immatures have dark brown barring and spotting. Yellow eyes and fully feathered feet.
Dark hooked bill mostly hidden by dense facial feathering
About These Birds
American Crow
美洲乌鸦（学名Corvus brachyrhynchos）是北美最常见、最广为人知的智慧鸟类之一。研究表明乌鸦能记住人脸，并在鸟类中表现出最高水平的工具使用能力。体全黑，成群活动。属鸦科（Corvidae），杂食性，高度适应人类环境。
Snowy Owl
The snowy owl is the heaviest North American owl and one of the most charismatic Arctic birds. Unlike most owls, it is largely diurnal, necessitated by the continuous daylight of Arctic summers. Snowy owl irruptions — periodic mass southward movements — are tied to lemming population cycles.