Attributes / relations provided by
♦ 1Making The Forest And Tundra Wildlife Connection♦ 2Exploring the Denali Food Web, ParkWise, National Park Service
♦ 3Martes americana, Tim W. Clark, Elaine Anderson, Carman Douglas, and Marjorie Strickland, MAMMALIAN SPECIES No. 289, pp. 1-8 (1987)
♦ 4National Geographic Magazine - May 2016 - Yellowstone - The Carnivore Comeback
♦ 5Spermophilus columbianus, Charles L. Elliott and Jerran T. Flinders, MAMMALIAN SPECIES No. 372, pp. 1-9 (1991)