Bismarck Boobook vs Snowy Owl
Ninox variegata comparé à Bubo scandiacus
Side-by-Side Comparison
| Attribut | Bismarck Boobook | Snowy Owl |
|---|---|---|
| Nom scientifique | Ninox variegata | Bubo scandiacus |
| Ordre | Strigiformes | Strigiformes |
| Famille | Strigidae | Strigidae |
| Statut de conservation | Least Concern | Vulnerable |
| Longueur | — | 63,0 cm (24.8 in) |
| Envergure | 41,6 cm (16.4 in) | 145,0 cm (57.1 in) |
| Poids | 179,0 g (6.31 oz) | 2100,0 g (74.08 oz) |
| Régime alimentaire | -- | Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. … |
| Taille de la couvée | -- | 3-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partagés
Aucun(e)
Bismarck Boobook only
Snowy Owl only
Snowy Owl
Arctic tundra for breeding. Winters in open habitats resembling tundra, including prairies, airports, shorelines, and agricultural fields.
Song & Call Comparison
Bismarck Boobook
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
Bismarck Boobook
Snowy Owl
Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.
Statut de conservation
Bismarck Boobook
Snowy Owl
How to Tell Them Apart
Bismarck Boobook
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
Bismarck Boobook
The Bismarck Boobook is a small hawk-owl endemic to the Bismarck Archipelago in Papua New Guinea. It has brown plumage with pale spotting on the upperparts and streaked underparts typical of boobook owls. It is nocturnal, hunting small vertebrates and large insects in forest and forest edges.
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.