northern hawk-owl surnia ulula perched on rotten trunk in birch forest. owl with yellow eyes. one of a few diurnal owls.

animal aves avian beak bill birch bird black camouflage canada chest diurnal eyes falconry feather feathers finland forest grey hawk head hunt hunter look natural nature nobody northern norway observations owl owls perched plumage prey raptor stump surname surnia sweden taiga tree ulula watching white wild wildlife