オウギワシ vs アカオノスリ
Harpia harpyja 比較対象 Buteo jamaicensis
Side-by-Side Comparison
| 属性 | オウギワシ | アカオノスリ |
|---|---|---|
| 学名 | Harpia harpyja | Buteo jamaicensis |
| 目 | Accipitriformes | Accipitriformes |
| 科 | Accipitridae | Accipitridae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | 100.0 cm (39.4 in) | 53.0 cm (20.9 in) |
| 翼開長 | 200.0 cm (78.7 in) | 124.0 cm (48.8 in) |
| 体重 | 7500.0 g (264.55 oz) | 1080.0 g (38.10 oz) |
| 食性 | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … | Small to medium mammals, especially voles, mice, and rabbits. Also takes birds, reptiles, and large … |
| 一腹卵数 | 2-3 | 2-4 |
| 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.
アカオノスリ
Open country with scattered elevated perches such as trees, poles, and cliffs. Adaptable to farmland, grasslands, roadsides, and suburban areas.
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.
アカオノスリ
Iconic, raspy descending scream: 'kreeeeee-ar', often used in films for all raptors. Gives short barking 'kak' notes near nest. Juveniles beg with persistent squealing whistles.
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.
アカオノスリ
North America from Alaska to Panama, including the Caribbean. One of the most common raptors in North America.
保全状況
オウギワシ
アカオノスリ
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
アカオノスリ
Variable plumage from pale to dark morphs. Most adults have rich brown upperparts, a pale breast with a dark belly band, and the characteristic rufous-red tail.
Dark hooked bill with a yellow cere
Key Differences
- • Weight: Red-tailed Hawk (1080g) vs Harpy Eagle (7500g)
- • Length: Red-tailed Hawk (53 cm) vs Harpy Eagle (100 cm)
- • Wingspan: Red-tailed Hawk (124 cm) vs Harpy Eagle (200 cm)
- • Conservation: Red-tailed Hawk (Least Concern) vs Harpy Eagle (Vulnerable)
- • Habitat: Red-tailed Hawk prefers Open country with scattered elevated perches such as trees,; Harpy Eagle prefers Tropical lowland rainforests, requiring large tracts of cont
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。
アカオノスリ
The red-tailed hawk is the most widespread and common hawk in North America. Its screaming cry is so iconic that it is often dubbed over bald eagle footage in films and television. These adaptable raptors thrive in human-altered landscapes and are a familiar sight perched along highways.