Attributes / relations provided by
♦ 1Cynomys ludovicianus, John L. Hoogland, MAMMALIAN SPECIES No. 535, pp. 1-10 (1996)
♦ 2SPECIES ASSESSMENT FOR SWIFT FOX (VULPES VELOX) IN WYOMING, DARBY N. DARK-SMILEY AND DOUGLAS A. KEINATH, prepared for United States Department of the Interior Bureau of Land Management, December 2003
♦ 3FOOD HABITS AND NEST CHARACTERISTICS OF BREEDING RAPTORS IN SOUTHWESTERN WYOMING, Patricia A. MacLaren, Stanley H. Anderson, and Douglas E. Runde, Great Basin Naturalist Vol. 48, No. 4 pp. 548-553 (1988)