Attributes / relations provided by
♦ ¹Prey Abundance, Space Use, Demography, and Foraging Habitat of Northern Goshawks in Western Washington, Thomas David Bloxton, Jr., University of Washington 2002
♦ ²Making The Forest And Tundra Wildlife Connection
♦ ³Spermophilus saturatus, Stephan C. Trombulak, MAMMALIAN SPECIES No. 322, pp. 1-4 (1988)
♦ ⁴Martes zibellina (Carnivora: Mustelidae), VLADIMIR G. MONAKHOV, MAMMALIAN SPECIES 43(876):75–86 (2011)
♦ ⁵Mustela frenata, Steven R. Sheffield and Howard H. Thomas, MAMMALIAN SPECIES No. 570, pp. 1-9 (1997)
♦ ⁶Exploring the Denali Food Web, ParkWise, National Park Service
♦ ⁷Sciurus niger, John L. Koprowski, MAMMALIAN SPECIES No. 479, pp. 1-9 (1994)
♦ ⁸Spermophilus elegans, David A. Zegers, Mammalian Species No. 214, pp. 1-7 (1984)