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Hot off the press 📢: one of the most surprising and unsettling findings of my PhD. A novel social tradition emerged in the tool-using capuchins of Jicarón island… abducting and carrying the infants of another species. Thread with gifs, videos, and all the bizarre details 👇

It’s a Nimba baby boom!!! 🥰 Check out all these cute additions to (one of) our study groups in the Nimba Mountains of Guinea Ape Behaviour & Ecology Group UZH Science Jane Goodall Institut Schweiz

The APE Group has a typical bonobo/chimpanzee-like fission-fusion social structure 😄 This foraging sub-group (or ‘party’) is saying goodbye to our emigrating female Anaïs! We so enjoyed your stay with us!! Ape Behaviour & Ecology Group UZH Science Université de Toulouse

📣ATTENTION!!! Two PhD positions on Creativity in Wild Chimpanzees and Bonobos 🤩Swiss National Science Foundation University of Zurich University of St Andrews Come join Ape Behaviour & Ecology Group & Wild Minds Lab Cat Hobaiter ✨Please RT✨ EFP-Primatology PSGB Students AABA IPS Primate Primate Educators

So so excited for this one!! Come join the K/Creative Ape Team (CAT 😉), 2 4yr PhDs fully funded on creativity in wild apes 🤓

Comparative thanatology (the study of how animals respond to death), offers insights into cognition, maternal bond, and grief. One response is *infant corpse carrying (ICC)*, which is observed in many animal species, particularly among cetaceans and primates including chimps

Prof Kathelijne Koops Ape Behaviour & Ecology Group Until now, ICC in chimps had only been documented in habituated groups via direct observation. But what about the many chimpanzee populations that aren't habituated? Using camera traps, we recorded ICC in 7 unhabituated communities, at *twice* the frequency of existing reports.

Prof Kathelijne Koops Ape Behaviour & Ecology Group Carried dead infants ranged from newborn to ~3 yrs old, and most cases involved an adult female carrier (likely the mum). ICC duration ranged from 1 to 28 days. Footage showed fresh and mummified carcasses, and in some cases, progressing from fresh to mummified.

Fab new paper on infant corpse carrying including observations on our Nimba chimps UZH Science Ape Behaviour & Ecology Group

Prof Kathelijne Koops Ape Behaviour & Ecology Group Bulindi Chimpanzees GMERC Many carrying styles were atypical to those of living healthy & sick infants, suggesting that chimps are aware of the difference... These carrying modes included draping the corpse over the shoulders/back, carrying the corpse in the mouth, by the head/neck or tucked in the groin.

Prof Kathelijne Koops Ape Behaviour & Ecology Group Bulindi Chimpanzees GMERC Marina Ramon Gorina Joana Bessa Instituto da Biodiversidade e das Áreas Protegidas Our data shows that camera traps can detect rare behaviours at wide geographical scales and reveal meaningful information that can help us explore leading hypotheses in ICC, such as maternal bond, post parturient conditions and death awareness.

Prof Kathelijne Koops Ape Behaviour & Ecology Group Bulindi Chimpanzees GMERC Marina Ramon Gorina Joana Bessa Instituto da Biodiversidade e das Áreas Protegidas Mohamed bin Zayed Species Conservation Fund University of Exeter CEC Big thanks to all amazing coauthors & research assistants involved in this multi-site project, and the funders including among others Biodiversity Challenge Funds Swiss National Science Foundation Mohamed bin Zayed Species Conservation Fund Re:wild Born Free Foundation EOCA - European Outdoor Conservation Association Natural Environment Research Council International Conservation Fund Dr. Jane Goodall & the Jane Goodall Institute

Chimpanzee Dian (named after Fossey) of the Tongbongbon community carrying her deceased infant in the Nimba Mountains of Guinea 😢Ape Behaviour & Ecology Group UZH Science

I'd apply in a heartbeat if I could. Most creative (!) project proposal I've ever read, brilliant fieldwork opportunities, and the BEST supervising team you could wish for! Apply, apply, apply!

Exploring Madagascar and loving every minute of it!!! 😍

IPS Madagascar 2025 kicked off strong with a warm welcome, primatologists from around the world, and a lively show of traditional music and dance! 🎉 IPS Primate #IPS #Madagascar

The 30th International Primatological Society (IPS) conference is off to a great start!! 🥳 Ape Behaviour & Ecology Group united in Madagascar!! 🤩 UZH Science Jane Goodall Institut Schweiz

I could not be prouder of Henry Didier Camara and Gnãn Mãmy for presenting their posters on cultural differences in chimpanzee diet in Nimba at the International Primatological Society conference!!! 🐵 🇲🇬 🤩 IPS Primate Ape Behaviour & Ecology Group Jane Goodall Institut Schweiz UZH Science

We had a fantastic symposium at the International Primatological Society conference on Comparative Perspectives on the Development of Material Culture Super proud of Ape Behaviour & Ecology Group members for their outstanding contributions 🤩🥳 UZH Science Swiss National Science Foundation

We feel very honoured for receiving a commendation in the International Primatological Society (IPS) Ethics, Diversity, Equality & Inclusivity awards for the Nimba Chimpanzee Project 🤩🙏❤️ Ape Behaviour & Ecology Group UZH Science Jane Goodall Institut Schweiz IPS Primate