白头海雕 vs Raggiana Bird-of-paradise
Haliaeetus leucocephalus 对比 Paradisaea raggiana
Side-by-Side Comparison
| 属性 | 白头海雕 | Raggiana Bird-of-paradise |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Paradisaea raggiana |
| 目 | Accipitriformes | Passeriformes |
| 科 | Accipitridae | Paradisaeidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 79.0 cm (31.1 in) | 34.0 cm (13.4 in) |
| 翼展 | 203.0 cm (79.9 in) | 45.0 cm (17.7 in) |
| 体重 | 4300.0 g (151.68 oz) | 260.0 g (9.17 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Fruit, seeds, arthropods, and small vertebrates. Males display at communal lek sites to attract females. |
| 产卵数 | 1-4 | 1-2 |
| 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.
Raggiana Bird-of-paradise
Tropical rainforest and forest edge from lowlands to mid-montane elevations in New Guinea.
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.
Raggiana Bird-of-paradise
Males emit harsh, buzzy 'kraaak' calls and explosive wailing during display. Females give softer 'waak' contact calls. Display calls are loud and chaotic at leks.
Geographic Range & Migration
白头海雕
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Raggiana Bird-of-paradise
Southern and eastern New Guinea. Endemic to Papua New Guinea.
保护状况
白头海雕
Raggiana Bird-of-paradise
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
Raggiana Bird-of-paradise
Males have a yellow crown, emerald-green throat, and spectacular cascading orange-red flank plumes. Females are brown with rufous underparts.
Stout, slightly curved, blue-grey bill
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.
Raggiana Bird-of-paradise
The raggiana bird-of-paradise is the national bird of Papua New Guinea, featured on the national flag and coat of arms. Males gather at traditional display trees to perform elaborate courtship dances, hanging upside down and shaking their spectacular flank plumes. Alfred Russel Wallace first described the species in 1873.