Unspotted Saw-whet Owl vs Schnee-Eule
Aegolius ridgwayi verglichen mit Bubo scandiacus
Side-by-Side Comparison
| Merkmal | Unspotted Saw-whet Owl | Schnee-Eule |
|---|---|---|
| Wissenschaftlicher Name | Aegolius ridgwayi | Bubo scandiacus |
| Ordnung | Strigiformes | Strigiformes |
| Familie | Strigidae | Strigidae |
| Erhaltungsstatus | Least Concern | Vulnerable |
| Länge | — | 63,0 cm (24.8 in) |
| Flügelspannweite | 27,7 cm (10.9 in) | 145,0 cm (57.1 in) |
| Gewicht | 86,0 g (3.03 oz) | 2100,0 g (74.08 oz) |
| Ernährung | -- | Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. … |
| Gelegegröße | 5-6 | 3-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Gemeinsame Lebensräume
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Unspotted Saw-whet Owl only
Schnee-Eule only
Schnee-Eule
Arctic tundra for breeding. Winters in open habitats resembling tundra, including prairies, airports, shorelines, and agricultural fields.
Song & Call Comparison
Unspotted Saw-whet Owl
Schnee-Eule
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
Unspotted Saw-whet Owl
Schnee-Eule
Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.
Erhaltungsstatus
Unspotted Saw-whet Owl
Schnee-Eule
How to Tell Them Apart
Unspotted Saw-whet Owl
Schnee-Eule
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
Unspotted Saw-whet Owl
The Unspotted Saw-whet Owl (<em>Aegolius ridgwayi</em>) is a small owl belonging to the family Strigidae (True Owls). It inhabits forest environments, typically montane or highland forest zones within its range. Detailed plumage and behavioral descriptions of this species are limited in the available literature. No nesting type information is currently available for this species, though members of the genus Aegolius are generally cavity nesters. Clutch size is recorded as 5 to 6 eggs, which is relatively large for a small …
Schnee-Eule
Die Schnee-Eule ist die schwerste Eule Nordamerikas und einer der charismatischsten Vögel der Arktis. Anders als die meisten Eulen ist sie größtenteils tagaktiv – bedingt durch das durchgehende Tageslicht der arktischen Sommer. Periodische Masseneinflüge der Schnee-Eule nach Süden hängen mit den Populationszyklen der Lemminge zusammen.