ヘビクイワシ vs オジロワシ
Sagittarius serpentarius 比較対象 Haliaeetus albicilla
Side-by-Side Comparison
| 属性 | ヘビクイワシ | オジロワシ |
|---|---|---|
| 学名 | Sagittarius serpentarius | Haliaeetus albicilla |
| 目 | Accipitriformes | Accipitriformes |
| 科 | Sagittariidae | Accipitridae |
| 保全状況 | Endangered | Least Concern |
| 体長 | 130.0 cm (51.2 in) | 84.0 cm (33.1 in) |
| 翼開長 | 210.0 cm (82.7 in) | 225.0 cm (88.6 in) |
| 体重 | 3700.0 g (130.51 oz) | 5200.0 g (183.42 oz) |
| 食性 | Snakes, lizards, small mammals, and large insects. Hunts on foot, stomping prey to death with … | Fish, waterfowl, and carrion. Often pirates food from other birds. Takes fish from the water … |
| 一腹卵数 | 1-4 | 1-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
ヘビクイワシ
Open grasslands, savannas, and light woodland across sub-Saharan Africa. Avoids dense forests and very arid regions.
オジロワシ
Coastlines, large lakes, and rivers with mature trees or cliffs for nesting. Requires large undisturbed areas.
Song & Call Comparison
ヘビクイワシ
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.
オジロワシ
High-pitched, yelping 'klee-klee' and deep barking 'ra-ra-ra'. Less vocal than Bald Eagle but similar chattering quality. Gives gull-like wailing near nest in breeding season.
Geographic Range & Migration
ヘビクイワシ
Sub-Saharan Africa from Senegal and Somalia south to South Africa. Resident throughout its range.
オジロワシ
Northern Europe and Asia from Greenland and Scandinavia to Japan. Reintroduced to Scotland and Ireland.
保全状況
ヘビクイワシ
オジロワシ
How to Tell Them Apart
ヘビクイワシ
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
オジロワシ
Brown body with a paler head in adults and a distinctive short white wedge-shaped tail. Massive broad wings in flight. Juveniles are darker overall.
Very large, heavy, pale yellow bill
About These Birds
ヘビクイワシ
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.
オジロワシ
The white-tailed eagle is Europe's largest eagle and the fourth-largest eagle in the world. Once extinct in Britain, it has been successfully reintroduced to Scotland and Ireland through conservation programs. These powerful raptors can live over 25 years and form lifelong pair bonds.