白头海雕 vs 兀鹫
Haliaeetus leucocephalus 对比 Gyps fulvus
Side-by-Side Comparison
| 属性 | 白头海雕 | 兀鹫 |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Gyps fulvus |
| 目 | Accipitriformes | Accipitriformes |
| 科 | Accipitridae | Accipitridae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 79.0 cm (31.1 in) | 100.0 cm (39.4 in) |
| 翼展 | 203.0 cm (79.9 in) | 260.0 cm (102.4 in) |
| 体重 | 4300.0 g (151.68 oz) | 8500.0 g (299.83 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Exclusively carrion, primarily large mammal carcasses. Feeds communally, with groups of vultures able to strip … |
| 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.
兀鹫
Mountains, cliffs, and open grasslands. Nests on cliff ledges in colonies. Requires thermals for soaring flight.
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.
兀鹫
Generally silent; hisses and grunts at carrion with other vultures. Gives low croaking 'arrr' near nest. At colonies produces cackling and grunting — not melodic vocalizations.
Geographic Range & Migration
白头海雕
North America from Alaska and Canada through the contiguous United States to northern Mexico.
兀鹫
Southern Europe, North Africa, the Middle East, and Central Asia. Resident in most of its range.
保护状况
白头海雕
兀鹫
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
兀鹫
Tawny-brown body with darker flight feathers. White neck ruff and bare greyish head. Long broad wings held flat when soaring.
Hooked yellowish bill adapted for tearing carrion
Key Differences
- • Weight: Bald Eagle (4300g) vs Griffon Vulture (8500g)
- • Length: Bald Eagle (79 cm) vs Griffon Vulture (100 cm)
- • Wingspan: Bald Eagle (203 cm) vs Griffon Vulture (260 cm)
- • Habitat: Bald Eagle prefers Large bodies of open water including coasts, rivers, and lak; Griffon Vulture prefers Mountains, cliffs, and open grasslands. Nests on cliff ledge
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.
兀鹫
The griffon vulture is one of Europe's largest flying birds and a crucial scavenger in Mediterranean ecosystems. These social birds nest in large cliff colonies and can soar for hours using thermals without flapping. Vulture populations faced a crisis from the veterinary drug diclofenac, which proved fatal when consumed through contaminated carcasses.