白头海雕 vs 黑栗雕
Haliaeetus leucocephalus 对比 Spizaetus isidori
Side-by-Side Comparison
| 属性 | 白头海雕 | 黑栗雕 |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Spizaetus isidori |
| 目 | Accipitriformes | Accipitriformes |
| 科 | Accipitridae | Accipitridae |
| 保护状况 | Least Concern | Endangered |
| 体长 | 79.0 cm (31.1 in) | — |
| 翼展 | 203.0 cm (79.9 in) | 96.9 cm (38.1 in) |
| 体重 | 4300.0 g (151.68 oz) | 2950.0 g (104.06 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | -- |
| 产卵数 | 1-4 | 1 |
| 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.
黑栗雕
Geographic Range & Migration
白头海雕
North America from Alaska and Canada through the contiguous United States to northern Mexico.
黑栗雕
保护状况
白头海雕
黑栗雕
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
黑栗雕
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.
黑栗雕
The Black-and-chestnut Eagle is an endangered large raptor of humid montane forests along the Andes, from Venezuela to Argentina. It has striking black upperparts and chestnut underparts with fine barring. It preys on medium-sized arboreal mammals, large birds, and reptiles, and is threatened by deforestation and hunting throughout its range.