白头海雕 vs 鹭鹰
Haliaeetus leucocephalus 对比 Sagittarius serpentarius
Side-by-Side Comparison
| 属性 | 白头海雕 | 鹭鹰 |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Sagittarius serpentarius |
| 目 | Accipitriformes | Accipitriformes |
| 科 | Accipitridae | Sagittariidae |
| 保护状况 | Least Concern | Endangered |
| 体长 | 79.0 cm (31.1 in) | 130.0 cm (51.2 in) |
| 翼展 | 203.0 cm (79.9 in) | 210.0 cm (82.7 in) |
| 体重 | 4300.0 g (151.68 oz) | 3700.0 g (130.51 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Snakes, lizards, small mammals, and large insects. Hunts on foot, stomping prey to death with … |
| 产卵数 | 1-4 | 1-4 |
| 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.
鹭鹰
Open grasslands, savannas, and light woodland across sub-Saharan Africa. Avoids dense forests and very arid regions.
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.
鹭鹰
A surprisingly deep, resonant croaking 'kowrr-kowrr' often heard at dawn on African savannas. Also gives pig-like grunting sounds. Mostly silent compared to true songbirds.
Geographic Range & Migration
白头海雕
North America from Alaska and Canada through the contiguous United States to northern Mexico.
鹭鹰
Sub-Saharan Africa from Senegal and Somalia south to South Africa. Resident throughout its range.
保护状况
白头海雕
鹭鹰
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
鹭鹰
Grey body plumage with black flight feathers and thigh feathers. Distinctive long black crest feathers trail from the back of the head. Orange-red bare facial skin.
Short, strong, hooked greyish bill with a yellowish cere
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.
鹭鹰
The secretary bird is the only raptor that hunts primarily on foot, striding through grasslands on crane-like legs up to 1.2 meters tall. Its name may derive from the crest feathers resembling quill pens tucked behind a secretary's ear. The species is classified as Endangered due to habitat loss and decline across much of its range.