オウギワシ vs ヘビクイワシ
Harpia harpyja 比較対象 Sagittarius serpentarius
Side-by-Side Comparison
| 属性 | オウギワシ | ヘビクイワシ |
|---|---|---|
| 学名 | Harpia harpyja | Sagittarius serpentarius |
| 目 | Accipitriformes | Accipitriformes |
| 科 | Accipitridae | Sagittariidae |
| 保全状況 | Vulnerable | Endangered |
| 体長 | 100.0 cm (39.4 in) | 130.0 cm (51.2 in) |
| 翼開長 | 200.0 cm (78.7 in) | 210.0 cm (82.7 in) |
| 体重 | 7500.0 g (264.55 oz) | 3700.0 g (130.51 oz) |
| 食性 | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … | Snakes, lizards, small mammals, and large insects. Hunts on foot, stomping prey to death with … |
| 一腹卵数 | 2-3 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
オウギワシ
Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.
ヘビクイワシ
Open grasslands, savannas, and light woodland across sub-Saharan Africa. Avoids dense forests and very arid regions.
Song & Call Comparison
オウギワシ
Rarely heard; emits mournful whistled screams 'wheee-oo' and low croaking grunts near the nest. Vocalizations poorly documented given its remote Amazonian habitat.
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.
Geographic Range & Migration
オウギワシ
Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.
ヘビクイワシ
Sub-Saharan Africa from Senegal and Somalia south to South Africa. Resident throughout its range.
保全状況
オウギワシ
ヘビクイワシ
How to Tell Them Apart
オウギワシ
Slate-black upperparts and head with a pale grey breast and white underparts with black barring. A distinctive split grey crest rises when the bird is alarmed.
Massive dark hooked bill, one of the largest of any eagle
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
About These Birds
オウギワシ
ハーピーワシは世界で最も強力な猛禽類の一つで、ハイイログマの爪ほどの大きさの鉤爪を持つ。パナマの国鳥。大規模な未撹乱の森林の生息地を必要とするため、森林破壊がこの種の最大の脅威。
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.