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Publications

Crockford C, Wittig, RM, Zuberbühler (2015) An intentional vocalization draws others' attention: A playback experiment with wild chimpanzees. Animal Cognition. [pdf] [supplementry]

Cheney, L., Crockford, C., Engh, A. L., Wittig, R. M., Seyfarth, R. M. (2014) The costs of parental and mating effort for male baboons. Behavioral Ecology and Sociobiology, 1-10

Langergraber, K. E., Rowney, C., Schubert, G., Crockford, C., Hobaiter, C., Wittig, R., ... & Vigilant, L. (2014). How old are chimpanzee communities? Time to the most recent common ancestor of the Y-chromosome in highly patrilocal societies. Journal of human evolution, 69, 1-7.

Crockford, C., Deschner, T., Ziegler, T. E., & Wittig, R. M. (2014). Endogenous peripheral oxytocin measures can give insight into the dynamics of social relationships: a review. Frontiers in behavioral neuroscience, 8:68. [pdf]

Wittig RM, Crockford C, Ziegler, T, Deschner T, Zuberbühler K. (2014). Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees. Proc Roy Soc Ser B, *281*(1778): 20133096. [pdf]

Wittig RM, Crockford C, .Langergraber K, Zuberbühler K. (2014). Triadic social interactions operate across time: a field experiment with wild chimpanzees. Proc Roy Soc Ser B, *281*(1779):20133155. [pdf]

Langergraber KE, Rowney C, Crockford C, Wittig R, Zuberbühler K, & Vigilant L. (2014). Genetic analyses suggest no immigration of adult females and their offspring into the Sonso community of chimpanzees in the Budongo Forest Reserve, Uganda. American journal of primatology.

Crockford C, Wittig RM, Langergraber K, Ziegler T, Zuberbühler K, Deschner T (2013) Urinary oxyotcin and social bonding in related and unrelated chimpanzees. Proc Roy Soc Ser B/2013 *280*(1755):20122765. [pdf] [supplimentry]

Crockford C, Wittig RM, Mundry R, Zuberbuehler K. (2012) Wild chimpanzees inform ignorant group members of danger. Current Biology, 22:142-146. [pdf] [supplimentry]

Silk JB, Beehner JC, Berman TJ, Crockford C, Engh AL, Moscovice LR, Wittig RM, Seyfarth RM & Cheney DL. (2010). Strong and consistent social bonds enhance the longevity of female baboons. Current Biology. 20:1359-1361. [pdf]

Silk JB, Beehner JC, Berman TJ, Crockford C, Engh AL, Moscovice LR, Wittig RM, Seyfarth RM & Cheney DL. (2010). Female chacma baboons form strong, equitable and enduring social bonds. Behavioral Ecology and Sociobiology. 64:1733-1747. [pdf]

Moscovice LR, Di Fiore A, Crockford C, Kitchen DM, Wittig RM, Seyfarth RM & Cheney DL. 2010. Hedging their bets? Male and female chacma baboons form friendships based on likelihood of paternity. Animal Behaviour 75, 1007-1015. [pdf]

Silk JB, Beehner JC, Berman TJ, Crockford C, Engh AL, Moscovice LR, Wittig RM, Seyfarth RM & Cheney DL. 2009. The benefits of social capital: Close social bonds among female baboons enhance offspring survival. Proceedings of the Royal Society B. 276:3099-3104. [pdf]

Wittig, RM., Crockford C, Lehmann, J, Whitten, PL., Seyfarth, RM. & Cheney, DL. 2008. Focused grooming networks and stress alleviation in wild female baboons. Hormones & Behavior. 54:170-177. doi:10.1016/j.yhbeh.2008.02.009. [pdf]

Crockford C., Wittig, RM., Whitten, PL., Seyfarth, RM. & Cheney, DL. 2008. Social correlates and coping mechanisms of stress in baboons (Papio hamadyras ursinus). Hormones & Behavior. 53:254-265. doi:10.1016/j.yhbeh.2007.10.007 [pdf]

Boesch, C., Crockford C., Herbinger, I., Wittig, R., Moebius, Y. & Normand, E. 2008. Intergroup conflicts among chimpanzees in the Taï National Park: Lethal violence and the female perspective. American Journal of Primatology. 70:519-532. [pdf]

Crockford C., Wittig, R. M., Seyfarth, R. M. & Cheney, D. L. 2007. Baboons eavesdrop to deduce mating opportunities. Animal Behaviour. 73:885-890. doi:10.1016/j.anbehav.2006.10.016 [pdf]

Wittig, R. M., Crockford C., Seyfarth, R. M. & Cheney, D. L. 2007. Vocal alliances in chacma baboons (Papio hamadryas ursinus). Behavioural Ecology and Sociobiology. 61:899-909. doi: 10.1007/s00265-006-0319-5 [pdf]

Wittig, R. M., Crockford C., Wikberg, E., Seyfarth, R. M & Cheney, D. L. 2007. Kin-mediated reconciliation substitutes for direct reconciliation in female baboons. Proceedings of the Royal Society, Series B. 274:1109-1115. doi:10.1163/156853901316924520 [pdf]

Crockford C. & Boesch, C. 2005. Call combinations in wild chimpanzees. Behaviour. 142:397-421. doi:10.1163/1568539054012047 [pdf]

Crockford C., Herbinger, I., Vigilant, L. & Boesch, C. 2004. Wild chimpanzees have group specific calls: a case for vocal learning? Ethology. 110:221-243. doi:10.111/j.1439-0310.2004.00968.x [pdf]

Crockford C. & Boesch, C. 2003. Context specific calls in wild chimpanzees, Pan troglodytes verus: analysis of barks. Animal Behaviour. 66:115-125. doi:10.1006/anbe.2003.2166 [pdf]

Crockford C. & Lesser, R. 1992. Assessing functional communication in aphasia: clinical utility and time demands of three methods. European Journal of Communication Disorders. 29:165-182.