Attributes / relations provided by
♦ 1del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.).
Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 2Spermophilus lateralis, Molly A. Bartels and Doug P. Thompson, MAMMALIAN SPECIES No. 440, pp. 1-8 (1993)