Department of Primatology
Max Planck Institute for Evolutionary Anthropology
Deutscher Platz 6
phone: +49 (341) 3550 - 200
fax: +49 (341) 3550 - 299
Samuni, L. et al. (2016). Oxytocin reactivity during intergroup conflict in wild chimpanzees (advance online). Proceedings of the National Academy of Sciences of the United States of America
Video Intergroup encounters with subtitles in Taï chimpanzees (filmed by Liran Samuni, ©Taï Chimpanzee Project)
Wittig, R.M., Crockford, C. et al. (2016). Social support reduces stress hormone levels in wild chimpanzees across stressful events and everyday affiliations. Nature Communications: 13361
Video 1 Intergoup encounters in Taï chimpanzees (filmed by Liran Samuni, ©Taï Chimpanzee Project)
Wittig, R. M., Crockford, C. et al. (2014). Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees. Proc. R. Soc. B: 281: 20133096.
Video 1Passive food sharing: Kwera and Kwezi share the pith of a raphia tree in Budongo forest (filmed by Roman Wittig)
Video 2Active food sharing: Kato shares meat with Hawa in Budongo forest (filmed by Cat Hobaiter)
Video 3Freddy shares actively honey with Athos (East Group, Tai Chimpanzee Project, filmed by Liran Samuni)
Crockford, C., Wittig, R. M. et al. (2012). Wild chimpanzees inform ignorant group members of danger. Curr. Biol. 22, 142-146.
Video 1 Kato discovers the snake model and warns Nick, who stops walking (fimed in Budongo forest by Roman Wittig).