Diet Overlap

Urocitellus brunneus (Idaho ground squirrel)
Urocitellus columbianus (Columbian ground squirrel)

Common Diet

Medicago sativa (yellow alfalfa)

Common Habitat

North America
Snake-Columbia shrub steppe

Attributes / relations provided by
1Spermophilus brunneus, Eric Yensen and Paul W. Sherman, MAMMALIAN SPECIES No. 560, pp. 1-5 (1997)
2Individual variation in the ability of Columbian ground squirrels to select an optimal diet, MARK E. RITCHIE, Evolutionary Ecology, 1988, 2, 232-252