A Red Squirrel (Sciurus vulgaris) explores his surroundings in the Cairngorms National Park, Scotland.

sciurus vulgaris betula sp eurasian red squirrel sciurus vulgaris sub alpine heath woodland winter adult alone trunk botany mount climb sciurus betula birch betula sp national park least concern february tree species cairngorms national park copy space nobody eurasian red squirrels sciurus vulgaris sub alpine heaths clear forests scattered forest woodlands adults single lonely only solo one lone trunks botany mounting climb scramble birches betula sp national parks sensitive natural areas least concern species arboreal species arboreal with nobody gray squirrel sciurus sp squirrel rodent mammal wild animal lawn and alpine meadow mountain area forest temperate season seasons atmosphere stage of development individual enumeration morphology botany morphology organism sciuridae rodentia mammalia synapsida vertebrata chordata deuterostomia coelomata bilateria metazoa opisthokonta eukaryota betulaceae fagales dicotyledoneae angiospermae spermatophyta phanerogamae tracheophyta embryophyta chlorobionta archaeplastida betulaceae family fagales order flora environment protection environment management biodiversity management environment low risk iucn) lr iucn red list of threatened species species species particularity scotland great britain united kingdom european union europe