References

Phylogeny References

Malyshev, S. I. 1968. Genesis of the Hymenoptera and the Phases of Their Evolution. London: Methuen. 319 pp.

Morrison, S. F., Pelchat, G., Donahue, A., & Hik, D. S.. 2009. "Influence of Food Hoarding Behavior on the Over-Winter Survival of Pikas in Strongly Seasonal Environments." Oecologia, 159(1), 107–116. http://www.jstor.org/stable/40309855.

Smith, C. C. 1968. “The adaptive nature of social organization in the genus of tree squirrels Tamiasciurus.” Ecol. Monogr. 38:31-63.

Smith, A. T. 1981. “Territoriality and social behaviour of Ochotona princeps.” In Proc. World Lagomorph Conf., ed. K. Myers, C. D. Maclnnes, pp. 310-323. Guelph, Canada: Guelph Univ. Press

Smith, C. C. and O. J. Reichman 1984. "The Evolution of Food Caching by Birds and Mammals." Annual Review of Ecology and Systematics 15: 329-351. http://www.jstor.org/stable/2096952

Ontogeny References

Connor, D. A., and Whitworth, M. R. 1985. "The Ontogeny of Vocal Communication in the Pika." Journal of Mammalogy 66:756-763.

Golian, S. C., and Whitworth, M.R. 1985. "Growth of Pikas (Ochotona princeps) in Colorado." Journal of Mammalogy 66:367-371.

Smith, C. C., and Reichman, O. J. 1984. "The Evolution of Food Caching by Birds and Mammals." Annual Review of Ecology and Systematics 15:329-351.

Whitworth, M.R., and Southwick, C. H. 1981. "Growth of pika in laboratory confinement." Growth 44:66-72.

Whitworth, M.R., and Southwick, C. H. 1984. "Sex differences in the ontogeny of social behavior in pikas: possible relationships to dispersal and territoriality." Behavioral Ecology and Sociobiology 15:175-182.

Mechanism References

Barrio, I.C., Hik, D.S. 2013. “After the frass: foraging pikas select patches previously grazed by caterpillars." Biology Letters 9.

Clayton, N.S. 1998. “Memory and the hippocampus of food-storing birds: a comparative approach.” Neuropharmacology 37:441-452.

Gibson, B., Kamil, A. 2009. “The synthetic approach to the study of spatial memory: Have we properly addressed Tinbergen's 'four questions'?” Behavioral Processes 80:278-287.

Pravosudov, V.V., Kitaysky, A.S., Wingfield, J.C., Clayton, N.S., 2004. “No latitudinal differences in adrenocortical stress response in wintering blackcapped chickadees (Poecile atricapilla)." Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology 137:95-103.

Saldanha, C.J., Schlinger, B.A., Clayton, N.S., 2000. “Rapid effects of corticosterone on cache recovery in mountain chickadees (Parus gambeli)." Hormones and Behavior 37:109-115.

Shettleworth, S.J., Krebs, J.R. 1986.“Stored and encountered seeds: a comparison of two spatial memory tasks in marsh tits and chickadees." Journal of Experimental Psychology: Animal Behavior Processes 12:248-257.

Whitworth, M.R., and Southwick, C. H. 1984. "Sex differences in the ontogeny of social behavior in pikas: possible relationships to dispersal and territoriality." Behavioral Ecology and Sociobiology 15:175-182.

Winterrowd, M.F. 2006. “Mechanisms of cache retrieval in the group nesting southern flying squirrel (Glaucomys volans).” Ethology 112:1136-1144.

Adaptive Value References

Morrison, S. F., Pelchat, G., Donohue, D., and Hik, D. S. 2009. "Influence of Food Hoarding Behavior on the Over-Winter Survival of Pikas in Strongly Seasonal Environments." Oecologia 159:107-116.

Huntly, N. J., Smith, A.T., Ivins, B. L. 1986. "Foraging Behavior of the Pika (Ochotona princeps), with Comparisons of Grazing versus Haying." Journal of Mammalogy 67:139-148

Varner, J., and Dearing, M. D. 2014. "Dietary plasticity in pikas as a strategy for atypical resource landscapes." Journal of Mammalogy 75:72-81.

McKetchnie, A. M., Smith, A. T., Peacock, M. M. 1994. "Kleptoparasitism in Pikas (Ochotona princeps): Theft of Hay." Journal of Mammalogy 75:488-491.