Attributes / relations provided by
♦ 1Study of Northern Virginia Ecology♦ 2Anurans as prey: an exploratory analysis and size relationships between predators and their prey, L. F. Toledo, R. S. Ribeiro & C. F. B. Haddad, Journal of Zoology 271 (2007) 170–177
♦ 3Blarina carolinensis, Timothy S. McCay, MAMMALIAN SPECIES No. 673, pp. 17 (2001)
♦ 4Spermophilus saturatus, Stephan C. Trombulak, MAMMALIAN SPECIES No. 322, pp. 1-4 (1988)
♦ 5Geomys bursarius (Rodentia: Geomyidae), MATTHEW B. CONNIOR, MAMMALIAN SPECIES 43(879):104–117 (2011)
♦ 6Sciurus niger, John L. Koprowski, MAMMALIAN SPECIES No. 479, pp. 1-9 (1994)
♦ 7Spermophilus elegans, David A. Zegers, Mammalian Species No. 214, pp. 1-7 (1984)
♦ 8FOOD 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)
♦ 9Spermophilus richardsonii, Gail R. Michener and James W. Koeppl, Mammalian Species No. 243, pp. 1-8, (1985)