Peregrine Falcon vs Snowy Owl
Falco peregrinus 比較対象 Bubo scandiacus
Side-by-Side Comparison
| 属性 | Peregrine Falcon | Snowy Owl |
|---|---|---|
| 学名 | Falco peregrinus | Bubo scandiacus |
| 目 | Falconiformes | Strigiformes |
| 科 | Falconidae | Strigidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | 43.0 cm (16.9 in) | 63.0 cm (24.8 in) |
| 翼開長 | 104.0 cm (40.9 in) | 145.0 cm (57.1 in) |
| 体重 | 750.0 g (26.46 oz) | 2100.0 g (74.08 oz) |
| 食性 | Almost exclusively medium-sized birds caught in flight, including pigeons, doves, waterfowl, and songbirds. Hunts with … | Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. … |
| 一腹卵数 | 2-4 | 3-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Peregrine Falcon
Diverse habitats from tundra to tropics, typically near cliffs or tall structures. Increasingly found in cities nesting on skyscrapers and bridges.
Snowy Owl
Arctic tundra for breeding. Winters in open habitats resembling tundra, including prairies, airports, shorelines, and agricultural fields.
Song & Call Comparison
Peregrine Falcon
A harsh, wailing 'kak-kak-kak-kak' repeated rapidly in defense of the nest. Alarm call is a long screaming 'raaak'. Mostly silent away from breeding sites.
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
Peregrine Falcon
One of the most widespread birds, found on every continent except Antarctica. Migratory populations travel vast distances between breeding and wintering grounds.
Snowy Owl
Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.
保全状況
Peregrine Falcon
Snowy Owl
How to Tell Them Apart
Peregrine Falcon
Blue-grey upperparts with barred white underparts. A distinctive black moustachial stripe contrasts with the white throat and cheeks.
Short, notched blue-grey bill with a yellow cere
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
Peregrine Falcon
世界最速の動物として知られるハヤブサで、急降下時には時速320キロメートルを超えることがある。南極を除く全大陸に生息し、都市部での繁殖も増加している。
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.