角雕 vs Snowy Owl
Harpia harpyja 对比 Bubo scandiacus
Side-by-Side Comparison
| 属性 | 角雕 | Snowy Owl |
|---|---|---|
| 学名 | Harpia harpyja | Bubo scandiacus |
| 目 | Accipitriformes | Strigiformes |
| 科 | Accipitridae | Strigidae |
| 保护状况 | Vulnerable | Vulnerable |
| 体长 | 100.0 cm (39.4 in) | 63.0 cm (24.8 in) |
| 翼展 | 200.0 cm (78.7 in) | 145.0 cm (57.1 in) |
| 体重 | 7500.0 g (264.55 oz) | 2100.0 g (74.08 oz) |
| 食性 | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … | Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. … |
| 产卵数 | 2-3 | 3-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
角雕
Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.
Snowy Owl
Arctic tundra for breeding. Winters in open habitats resembling tundra, including prairies, airports, shorelines, and agricultural fields.
Song & Call Comparison
角雕
Rarely heard; emits mournful whistled screams 'wheee-oo' and low croaking grunts near the nest. Vocalizations poorly documented given its remote Amazonian habitat.
Snowy Owl
Male gives a deep booming hoot 'hooooo' and a rising 'hoo-hoo' series. Also barks sharply when alarmed. Quieter than many owls; silent during long Arctic winter hunts.
Geographic Range & Migration
角雕
Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.
Snowy Owl
Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.
保护状况
角雕
Snowy Owl
How to Tell Them Apart
角雕
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
Snowy Owl
Adult males are almost entirely white. Females and immatures have dark brown barring and spotting. Yellow eyes and fully feathered feet.
Dark hooked bill mostly hidden by dense facial feathering
About These Birds
角雕
角雕是美洲最大的猛禽之一，翼展可达224厘米。头部具灰白色双羽冠，体羽黑白对比分明，爪极为强大有力。分布于墨西哥至玻利维亚的热带低地雨林，以树栖哺乳动物为主食，包括树懒和猴子。飞行速度快，是雨林顶级捕食者。
Snowy Owl
The snowy owl is the heaviest North American owl and one of the most charismatic Arctic birds. Unlike most owls, it is largely diurnal, necessitated by the continuous daylight of Arctic summers. Snowy owl irruptions — periodic mass southward movements — are tied to lemming population cycles.