Attributes / relations provided by
♦ ¹FOOD HABITS IN RELATION TO THE ECOLOGY AND POPULATION DYNAMICS OF BLUE GROUSE, RICHARD DENNIS KING, Masters Thesis, University of British Columbia, 1964
♦ ²Spermophilus lateralis, Molly A. Bartels and Doug P. Thompson, MAMMALIAN SPECIES No. 440, pp. 1-8 (1993)