canada conifers forest green landscape mountain natural nature peak Rockies Rocky Mountains snow snowy summit calm cold oak oaks tree trees white winter colors frozen icy lens flare spruce vivid young trees ancient times b/w black and white bw christmas conifer coniferous wood dark december Fir Forrest frost frosty group January needle wood old old times pine pinewood snowy day soft wood trees in snow winter scenery colorado hill kids mountains sled sledding footpath nobody trail Tranquil Scene vertical. nature woods alp alps glacier Glacier Express swiss switzerland pines sky snowy forest beak bird claws eye feathers female Nyctea scandiaca owl perch plumage predator raptor snowy owl talons