Great Horned Owl vs オウギワシ
Bubo virginianus 比較対象 Harpia harpyja
Side-by-Side Comparison
| 属性 | Great Horned Owl | オウギワシ |
|---|---|---|
| 学名 | Bubo virginianus | Harpia harpyja |
| 目 | Strigiformes | Accipitriformes |
| 科 | Strigidae | Accipitridae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | 55.0 cm (21.7 in) | 100.0 cm (39.4 in) |
| 翼開長 | 127.0 cm (50.0 in) | 200.0 cm (78.7 in) |
| 体重 | 1400.0 g (49.38 oz) | 7500.0 g (264.55 oz) |
| 食性 | Extremely diverse — mammals (rabbits, skunks, rodents), birds (including other raptors), reptiles, amphibians, and fish. … | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … |
| 一腹卵数 | 1-4 | 2-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Great Horned Owl
Diverse habitats including forests, deserts, swamps, urban parks, and suburban areas. Nests in tree hollows, cliff ledges, and abandoned nests of other large birds.
オウギワシ
Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.
Song & Call Comparison
Great Horned Owl
Deep, resonant 'who-who-who-who-ooo': the classic 'hoo-h'HOO-hoo-hoo' territorial duet of a mated pair. Booms at dusk. Female pitch slightly higher than male.
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.
Geographic Range & Migration
Great Horned Owl
North and South America from subarctic Canada to Tierra del Fuego. One of the most widespread owls in the Americas.
オウギワシ
Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.
保全状況
Great Horned Owl
オウギワシ
How to Tell Them Apart
Great Horned Owl
Mottled grey-brown plumage with heavy dark barring. Prominent ear tufts, yellow eyes, and a white throat patch give a fierce expression.
Dark grey-black hooked bill almost hidden by facial disc feathers
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
About These Birds
Great Horned Owl
The great horned owl is the most powerful and widespread owl in the Americas, earning the nickname tiger of the sky. It is one of the earliest nesting birds, often laying eggs in January when snow still covers the ground. Great horned owls are fierce predators, regularly taking prey up to three times their own weight.
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。