白头海雕 vs 黑肩鸢
Haliaeetus leucocephalus 对比 Elanus axillaris
Side-by-Side Comparison
| 属性 | 白头海雕 | 黑肩鸢 |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Elanus axillaris |
| 目 | Accipitriformes | Accipitriformes |
| 科 | Accipitridae | Accipitridae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 79.0 cm (31.1 in) | — |
| 翼展 | 203.0 cm (79.9 in) | 57.7 cm (22.7 in) |
| 体重 | 4300.0 g (151.68 oz) | 266.25 g (9.39 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | -- |
| 产卵数 | 1-4 | 2-5 |
| 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.
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.
黑肩鸢
Geographic Range & Migration
白头海雕
North America from Alaska and Canada through the contiguous United States to northern Mexico.
黑肩鸢
保护状况
白头海雕
黑肩鸢
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
黑肩鸢
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.