白头海雕 vs 白尾鹞
Haliaeetus leucocephalus 对比 Circus cyaneus
Side-by-Side Comparison
| 属性 | 白头海雕 | 白尾鹞 |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Circus cyaneus |
| 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) | 70.5 cm (27.8 in) |
| 体重 | 4300.0 g (151.68 oz) | 442.0 g (15.59 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | -- |
| 产卵数 | 1-4 | 1-7 |
| 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.
白尾鹞
Geographic Range & Migration
白头海雕
North America from Alaska and Canada through the contiguous United States to northern Mexico.
白尾鹞
保护状况
白头海雕
白尾鹞
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
白尾鹞
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.
白尾鹞
白尾鹞（约400克）是一种苗条的鹞类，雄鸟为灰白色，雌鸟为棕色，两者均具有白色腰斑。繁殖于北半球开阔生境，以低空飞行、利用听觉定位猎物的捕食方式著称。近危；部分地区因繁殖栖息地丧失而数量下降，尤以英国为甚。