Sources

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Dobson, F. S., and Fairbanks, Bonnie (2007). "“Mechanisms of the Group-size Effect on Vigilance in Columbian Ground Squirrels: Dilution versus Detection.” " Animal Behavior 73(1): 115-123.

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Harris, M. A. a. M., Jan O. (1982). "“Annual Variation of Spring Emergence and Breeding in Columbian Ground Squirrels (Spermophilus columbianus).” " Journal of Mammology 63(3): 431-439.

Manno, T. G., Debarbieri, L.M., Dobson, F.S., Kennedy, S.E., Nesterova, A. P., and Wright, K.S. (2007). "“Why do Male Columbian Ground Squirrels give a Mating Call?”" Animal Behaviour 74(5): 1319-1327.

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Steiner, A. L. (1972). "“Mortality Resulting from Intraspecific Fighting in Some Ground Squirrel Populations.”" Journal of Mammology 53(3): 601-603.

Turner, L. (1972). "Habitat Differences between Spermophilus beldingi and Spermophilus Columbianus in Oregon." Journal of Mammalogy 53(4): 914-917.

Weddell, B. J. (1989). "“Dispersion of Columbian Ground Squirrels (Spermophilus columbianus) in Meadow Steppe and Coniferous Forest.” " Journal of Mammology 70(4): 842-845.

Photos

Photos provided by Gary Hebert at http://www.pbase.com/turnstyle. Thanks a lot Gary!

This website was completed in partial fulfillment of the requirements for Biology 323, Animal Behavior, at Davidson College in the Spring Semester 2008.

Please send any comments, questions or suggestions regarding this website to Kevin Cook or Professor Verna Case.