Attributes / relations provided by
♦ 1Snowy Plover (Kentish Plover) Charadrius alexandrinus, K. Boula, 1996, U.S. Forest Service
♦ 2FOOD 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)
♦ 3Spermophilus richardsonii, Gail R. Michener and James W. Koeppl, Mammalian Species No. 243, pp. 1-8, (1985)