American Crow vs 角雕
Corvus brachyrhynchos 对比 Harpia harpyja
Side-by-Side Comparison
| 属性 | American Crow | 角雕 |
|---|---|---|
| 学名 | Corvus brachyrhynchos | Harpia harpyja |
| 目 | Passeriformes | Accipitriformes |
| 科 | Corvidae | Accipitridae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | 45.0 cm (17.7 in) | 100.0 cm (39.4 in) |
| 翼展 | 99.0 cm (39.0 in) | 200.0 cm (78.7 in) |
| 体重 | 450.0 g (15.87 oz) | 7500.0 g (264.55 oz) |
| 食性 | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … |
| 产卵数 | 3-7 | 2-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
角雕
Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.
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.
角雕
Rarely heard; emits mournful whistled screams 'wheee-oo' and low croaking grunts near the nest. Vocalizations poorly documented given its remote Amazonian habitat.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
角雕
Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.
保护状况
American Crow
角雕
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
角雕
Slate-black upperparts and head with a pale grey breast and white underparts with black barring. A distinctive split grey crest rises when the bird is alarmed.
Massive dark hooked bill, one of the largest of any eagle
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。
角雕
角雕是美洲最大的猛禽之一，翼展可达224厘米。头部具灰白色双羽冠，体羽黑白对比分明，爪极为强大有力。分布于墨西哥至玻利维亚的热带低地雨林，以树栖哺乳动物为主食，包括树懒和猴子。飞行速度快，是雨林顶级捕食者。