owl in green forest. boreal owl, aegolius funereus, perched on rotten oak stump. typical small owl with big yellow eyes.

owl boreal aegolius funereus nature wildlife natural wild bird animal oak forest rotten stump hunter hunt raptor predator eyes yellow beak bill plumage feather look tengmalm beautiful tree trunk green perched camouflage nocturnal day nesting season spring summer colorful background czech canada sweden finland norway denmark france korea europe america asia typical small big tengmalm's prey habitat forest stump eyes