白头海雕 vs Common Raven
Haliaeetus leucocephalus 对比 Corvus corax
Side-by-Side Comparison
| 属性 | 白头海雕 | Common Raven |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Corvus corax |
| 目 | Accipitriformes | Passeriformes |
| 科 | Accipitridae | Corvidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 79.0 cm (31.1 in) | 63.0 cm (24.8 in) |
| 翼展 | 203.0 cm (79.9 in) | 130.0 cm (51.2 in) |
| 体重 | 4300.0 g (151.68 oz) | 1200.0 g (42.33 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Omnivorous and opportunistic — carrion, small animals, insects, eggs, grain, fruit, and human refuse. Among … |
| 产卵数 | 1-4 | 1-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
白头海雕
Large bodies of open water including coasts, rivers, and lakes with abundant fish and old-growth trees for nesting.
Common Raven
Diverse habitats from Arctic tundra to deserts, mountains, forests, and coastlines. Avoids dense urban areas but thrives near human activity.
Song & Call Comparison
白头海雕
High-pitched, chattering whistle: a rapid 'kleek-kik-ik-ik-ik'. Surprisingly weak and thin for such a large raptor. Also gives a lower 'kwit-kwit' call near the nest.
Common Raven
Highly varied: deep resonant 'kraa-kraa-kraa', hollow 'tok-tok', liquid 'klonk', and wing-whooshing. Among the most intelligent corvid callers; uses calls contextually in groups.
Geographic Range & Migration
白头海雕
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Common Raven
Holarctic distribution across North America, Europe, Asia, and North Africa. The most widely distributed corvid.
保护状况
白头海雕
Common Raven
How to Tell Them Apart
白头海雕
Adults have a dark brown body with a striking white head and tail. Juveniles are mottled brown and white, reaching full adult plumage at age five.
Large, hooked, bright yellow bill
Common Raven
All black with a glossy purplish-blue iridescent sheen. Shaggy throat hackles, long wedge-shaped tail, and large robust build distinguish it from crows.
Large, powerful, curved black bill
About These Birds
白头海雕
The bald eagle is the national bird and symbol of the United States. Once endangered due to DDT pesticide use, it made a remarkable recovery and was removed from the endangered species list in 2007. These powerful raptors build the largest tree nests of any bird, some weighing over two tons.
Common Raven
渡鸦（Corvus corax）— 广泛分布于北半球的最大雀形目鸟类。以高度智慧著称，能使用工具并解决问题。