Caches are usually used in the colder months when food is scarce. Western grey squirrels do not hibernate but much less time is spent outside during the colder winter months. Sciurus griseus is non-territorial except when the female is in estrus. Habitat Western grey squirrels are found in woodlands and coniferous forests. They can be found at elevations up to 2500 meters.
Some people consider squirrels to be a nuisance.
December 2, 1994. The American Society of Mammalogists, . March 16, 1999. Nowalk, Ronald M. 1999. Johns Hopkins University Press, Baltimore.