Key points are not available for this paper at this time.
Norris L. Dodd, Jack S. States, Steven S. Rosenstock, Tassel-Eared Squirrel Population, Habitat Condition, and Dietary Relationships in North-Central Arizona, The Journal of Wildlife Management, Vol. 67, No. 3 (Jul., 2003), pp. 622-633
Dodd et al. (Tue,) studied this question.