Diet Overlap

Tamiasciurus douglasii (Douglas's squirrel)
Tamias cinereicollis (gray-collared chipmunk)

Common Diet

Pinus ponderosa (Ponderosa pine)
Pseudotsuga menziesii (Douglas fir)

Common Habitat

North America

Attributes / relations provided by
1Tamiasciurus douglasii, Michael A. Steele, MAMMALIAN SPECIES No. 630, pp. 1-8 (1999)
2Tamias cinereicollis, Clayton D. Hilton and Troy L. Best, MAMMALIAN SPECIES No. 436, pp. 1-5 (1993)