Grampp, M, Samuni, L, Girard-Buttoz, C, León, J, Zuberbühler, K, Tkaczynski, PJ, Wittig, RM and Crockford, C (2023) Social uncertainty promotes signal complexity during approaches in wild chimpanzees (Pan troglodytes verus) and mangabeys (Cercocebus atys atys). Royal Society Open Science, 10 (11). p. 231073. ISSN 2054-5703

Tkaczynski, PJ, Mafessoni, F, Girard-Buttoz, C, Samuni, L, Ackermann, CY, Fedurek, P, Gomes, C, Hobaiter, C, Löhrich, T, Manin, V, Preis, A, Valé, PD, Wessling, EG, Wittiger, L, Zommers, Z, Zuberbuehler, K, Vigilant, L, Deschner, T, Wittig, RM and Crockford, C (2023) Shared community effects and the non-genetic maternal environment shape cortisol levels in wild chimpanzees. Communications Biology, 6 (1). p. 565. ISSN 2399-3642

Bründl, AC, Girard-Buttoz, C, Bortolato, T, Samuni, L, Grampp, M, Löhrich, T, Tkaczynski, P, Wittig, RM and Crockford, C (2022) Maternal effects on the development of vocal communication in wild chimpanzees. iScience, 25 (10). p. 105152. ISSN 2589-0042

Surbeck, M, Girard-Buttoz, C, Samuni, L, Boesch, C, Fruth, B, Crockford, C, Wittig, RM and Hohmann, G (2021) Attractiveness of female sexual signaling predicts differences in female grouping patterns between bonobos and chimpanzees. Communications Biology, 4 (1). ISSN 2399-3642

Girard-Buttoz, C, Tkaczynski, PJ, Samuni, L, Fedurek, P, Gomes, C, Löhrich, T, Manin, V, Preis, A, Valé, PF, Deschner, T, Wittig, RM and Crockford, C (2021) Early maternal loss leads to short- but not long-term effects on diurnal cortisol slopes in wild chimpanzees. eLife, 10. ISSN 2050-084X

Girard-Buttoz, C, Surbeck, M, Samuni, L, Boesch, C, Fruth, B, Crockford, C, Hohmann, G and Wittig, RM (2020) Variable use of polyadic grooming and its effect on access to social partners in wild chimpanzees and bonobos. Animal Behaviour, 168. pp. 211-224. ISSN 0003-3472

Tkaczynski, PJ, Behringer, V, Ackermann, CY, Fedurek, P, Fruth, B, Girard-Buttoz, C, Hobaiter, C, Lee, SM, Loehrich, T, Preis, A, Samuni, L, Zommers, Z, Zuberbuehler, K, Deschner, T, Wittig, RM, Hohmann, G and Crockford, C (2020) Patterns of urinary cortisol levels during ontogeny appear population specifi c rather than species specifi c in wild chimpanzees and bonobos. Journal of Human Evolution, 147. ISSN 0047-2484

Tkaczynski, PJ, Mielke, A, Samuni, L, Preis, A, Wittig, RM and Crockford, C (2020) Long-term repeatability in social behaviour suggests stable social phenotypes in wild chimpanzees. Royal Society Open Science, 7 (8). ISSN 2054-5703

Girard-Buttoz, C, Surbeck, M, Samuni, L, Tkaczynski, P, Boesch, C, Fruth, B, Wittig, RM, Hohmann, G and Crockford, C (2020) Information transfer efficiency differs in wild chimpanzees and bonobos, but not social cognition. Proceedings of the Royal Society B: Biological Sciences, 287 (1929). ISSN 0962-8452

Samuni, L, Tkaczynski, P, Deschner, T, Loehrrich, T, Wittig, RM and Crockford, C (2020) Maternal effects on offspring growth indicate post-weaning juvenile dependence in chimpanzees (Pan troglodytes verus). Frontiers in Zoology, 17 (1). ISSN 1742-9994

Fedurek, P, Tkaczynski, PJ, Asiimwe, C, Hobaiter, C, Samuni, L, Lowe, AE, Dijrian, AG, Zuberbühler, K, Wittig, RM and Crockford, C (2019) Maternal cannibalism in two populations of wild chimpanzees. Primates, 61 (2). pp. 181-187. ISSN 0032-8332

Sonnweber, R, Araya-Ajoy, YG, Behringer, V, Deschner, T, Tkaczynski, PJ, Fedurek, P, Preis, A, Samuni, L, Zommers, Z, Gomes, C, Zuberbühler, K, Wittig, RM and Crockford, C (2018) Circadian Rhythms of Urinary Cortisol Levels Vary Between Individuals in Wild Male Chimpanzees: A Reaction Norm Approach. Frontiers in Ecology and Evolution, 6 (85). ISSN 2296-701X