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Under review

    • Clark P.R., Waller B.M., Burrows A.M., Julle-Danière E., Agil M., Engelhardt A., Micheletta J.: Morphological variants of bared-teeth displays have different social interaction outcomes in crested macaques (Macaca nigra), (American Journal of Physical Anthropology).
    • Kavanagh E., Micheletta J., Slocombe K. (>40 authors): The relationship between dominance style and vocal communication in primates at the individual and species level, under review (PLoS BIO).
    • Duboscq J., Agil M., Perwitasari-Farajallah D., Engelhardt A.: Reciprocity in wild female crested macaques, Macaca nigra, (International Journal of Primatology).
    • Tyrrell M., Berman C. M., Duboscq J., Agil M., Sutrisno T., Engelhardt A.: Avoidant social style among wild crested macaque males (Macaca nigra) in Tangkoko Nature Reserve, Sulawesi, Indonesia, (Behaviour).
    • Chanvin, M.; Hoskins, S.; Agil, M.; Diko, N.; Micheletta, J.; Engelhardt, A.; M. Waller BM.: The impact of conservation education on parents and teachers knowledge, habits and attitudes towards their local environment in North Sulawesi.
    • Neumann C., Kulik L., Agil M., Engelhardt A., Widdig A.: Temporal dynamics and reproductive consequences of coalition formation in male primates (Proceedings of the Royal Society of London, B).
    • Engelhardt A., Heistermann M , Agil M , Perwitasari-Farajallah D., Widdig A., Higham J.P.: A despotic male-male competitive regime in a socially tolerant primate species, the crested macaque (Animal Behaviour).


    • Gholib G., Heistermann M., Agil M., Supriatna I., Purwantara B., Nugraha T., Engelhardt A. (2018): Comparison of fecal preservation and extraction methods for steroid hormone metabolite analysis in wild crested macaques. Primates, 59:281-292.
    • Gholib G., Agil M., Supriatna I., Purwantara B., Heistermann M., *Engelhardt A. (2018): Repeated freeze-thaw cycles but not short-term storage of fecal extracts at ambient temperature influence the stability of steroid metabolite levels in crested macaques. J Kedokteran Hewan, 11(2), 78-85.
    • Balasubramaniam K. N., Beisner B. A., Berman C. M., De Marco A., Duboscq J., Thierry, B., de Waal, F. B. M., & McCowan, B. (2018): The influence of phylogeny, social style, and sociodemo-graphic factors on macaque social network structure. Am J of Primatol 80(1). doi: 10.1002/ajp.22727.
    • Danish L., Kerhoas D., Bertrand D., Febriyanti D., *Engelhardt A. (2018): Crested Macaque, Macaca nigra (Desmarest, 1822), Indonesia (Sulawesi). In: Primates in Peril: The World’s 25 Most Endangered Primates 2017-2018. (eds. Schwitzer, C, Mittermeier, RA, Rylands AB, Chiozza F, Williamson EA, Macfie EJ, Wallis J & Cotton, A), 64-66.


    • Balasubramaniam, K. N.; Beisner, B. A.; Berman, C.M; De Marco, A.; Duboscq, J.;Koirala, S.; Majolo, B.; MacIntosh, A. J.; McFarland, R.; Molesti, S.; Ogawa, H.; Petit, O.; Schino, G.; Sosa, S.; Sueur, C.; Thierry, B.; de Waal, F. B. M.; McCowan, B. (2017): The influence of phylogeny, social style, and sociodemographic factors on macaque social network structur. Am J Primatol. DOI:10.1002/ajp.22727
    • Duboscq, J.; Neumann, C.; Agil, M; Perwitasari-Farajallah, D.; Thierry, B.; Engelhardt, A. (2017): Degrees of freedom in social bonds of crested macaques females. Animal Behaviour 123: 411-426.
    • Engelhardt, A.; Muniz, L.; Perwitasari-Farajallah, D.; Widdig, A. (2017): Highly Polymorphic Microsatellite Markers for the Assessment of Male Reproductive Skew and Genetic Variation in Critically Endangered Crested Macaques (Macaca nigra). Im J Primatol  38: 672-691.
    • Marty, PR.; Hodges, K.; Heistermann, M.; Agil, M.; Engelhardt, A. (2017): Is social dispersal stressful? A study in male crested macaques (Macaca nigra). Hormones and Behaviour 87: 62-68


    • Kerhoas, D.; Kulik, L.; Perwitasari-Farajallah, D.; Agil, M.; Engelhardt, A.; Widdig, A. (2016): Mother-male bond, but not paternity, influences male-infant affiliation in wild crested macaques. Behav Ecol Sociobiol DOI: 10.1007/s00265-016-2116-0.
    • Marty, PR.; Hodges, K.; Agil, M.; Engelhardt, A. (2016): Determinants of immigration strategies in male crested macaques (Macaca nigra). Animal Behabiour 87: 62-68.


    • Marty, PR.; Hodges, K.; Agil, M.; Engelhardt, A. (2015): Alpha male replacements and delayed dispersal in crested macaques (Macaca nigra). American journal of primatology.
    • Higham, JP.; Kraus, C.; Stahl-Hennig, C.; Engelhardt, A.; Fuchs, D.; Heistermann, M. (2015): Evaluating non-invasive markers of non-human primate immune activation. Am J Phys Anthropol 158: 673-684.
    • Danish, LM.; Heistermann M.; Agil, M,; Engelhardt, A. (2015): Validation of a novel collection device for non-invasive urine sampling from free-ranging animals. Plos One 10: e0142051.
    • Micheletta, J.; Whitehouse, J.; Parr, L.A.; Marshman, P.; Engelhardt, A.; Waller, B.M. (2015): Familiar and unfamiliar face recognition in crested macaques (Macaca nigra). Royal Society Open Science. Doi: 10.1098/rsos.150109.


    • Kerhoas, D.; Perwitasari-Farajallah, D.; Agil, M.; Widdig, A.; Engelhardt, A. (2014): Social and ecological factors influencing offspring survival in wild macaques. Behavioral Ecology, DOI:10.1093/beheco/aru099.
    • Duboscq, J.; Agil, M.; Engelhardt, A. ; Thierry, B. (2014): The function of post-conflict interactions: new prospects from the study of a tolerant species of primate. Animal Behaviour 87: 107-120.


    • Neumann, C; Agil, M.; Widdig, A.; Engelhardt, A.; (2013): Personality, of wild male crested Macaques (Macaca nigra), PLoS One, 8(8): e69383. doi:10.1371/journal.pone.006938375:763-73.
    • Micheletta, J.; Engelhardt, A.; Matthews, L.; Agil, M.; Waller, B.M.; (2013): Multicomponent and multimodal lipsmacking in crested macaques (Macaca nigra), American Journal of Primatology, 75:763-73.
    • Duboscq, J.; Micheletta, J.; Agil, M.; Hodges, JK.; Thierry, B.; Engelhardt, A. (2013): Social tolerance in wild female crested macaques, Macaca nigra in Tangkoko-Batuangus Nature Reserve, Sulawesi, Indonesia, American Journal of Primatology, 75:361-75.


    • Micheletta, J.; Waller, B.M.; Panggur, M.R.; Neumann C.; Duboscq J.; Agil, M.; Engelhardt, A. (2012): Social bonds affect anti-predator behaviour in a tolerant species of macaque, Macaca nigra, Proceedings Roy Soc B-Biol Sci 279:4042-4050.
    • Higham, J.P.; Heistermann, M.; Saggau, C.; Agil, M.; Perwitasari‐Farajallah, D.; Engelhardt, A.: Sexual signalling in female crested macaques and the evolution of primate fertility signals, BMC Evolutionary Biology 12: 89.
    • Palacios, J.F.G.; Engelhardt, A.; Agil, M.; Hodges, J.K.; Bogia, R.; Waltert, M. (2012): Status of, and conservation recommendations for, the Critically Endangered crested black macaque Macaca nigra in Tangkoko, Indonesia, Oryx 46: 290-297.


    • Neumann, C.; Duboscq, J.; Dubuc, C.; Ginting, A.; Irwan, A.M.; Agil, M., Widdig, A.; Engelhardt, A. (2011): Assessing dominance hierarchies: validation and advantages of progressive evaluation with Elo rating, Animal Behaviour 82: 911-921.
    • Palacios,J.F.G.; Engelhardt, A.; Agil, M.; Hodges, J.K., Bogia, R.; Waltert, M. (2011): Population status of crested black macaques (Macaca nigra) in the Tangkoko Nature Reserve, Sulawesi, Indonesia, Oryx, online.


    • Neumann, C.; Assahad, G.; Hammerschmidt, K.; Farajallah, D.P.; Engelhardt, A. (2010): Loud calls in male Macaca nigra – a signal of dominance in a tolerant primate species, Animal Behaviour 79: 187-193.


    • Duboscq, J.; Perwitasari-Farajallah, D.; Engelhardt, A. (2009):  Social Interactions between Females in Wild Crested Macaques, Macaca nigra”, Folia Primatologica, 80, 157.
    • Engelhardt, A.; Heistermann, M.; Perwitasari-Farajallah, D. (2009): Sex skin colouration in male Sulawesi crested black macaques (Macaca nigra), Primate Eye, 96, 337.
    • Neumann, C.; Assahad, G.; Hammerschmidt, K.; Perwitasari-Farajallah, D. ; Engelhardt, A. (2009): Male Sexual Signals in Crested Macaques (Macaca nigra)”, Folia Primatologica, 80, 131–2.
    • Assahad, G.; Neumann, C.; Hammerschmidt, K.; Farajallah, D.P.; Engelhardt, A. (2008): Rank dependant differences in loud call frequency and structure in Sulawesi crested black macaques (Macaca nigra), Folia Primatologica, 79, 311.
    • Duboscq, J.; Neumann, C.; Perwitasari-Farajallah, D.; Engelhardt, A. (2008): Daytime birth of a baby crested black macaque (Macaca nigra) in the wild, Behavioural Processes 79: 81–84.
    • Engelhardt, A.; Perwitasari-Farajallah, D. (2008): Reproductive biology of Sulawesi crested black macaques (Macaca nigra), Folia Primatologica, 79, 326.
    • Neumann, C.; Assahad, G.; Hammerschmidt, K.; Farajallah, D.P.; Engelhardt, A. (2008): Individual and contextual differences in loud calls of male crested black macaques, Macaca nigra, Folia Primatologica, 79, 366.