Research

Male Howard from Dam groupBonnet macaque infantunknown 26Females in Dam groupunknown 5unknown 13unknown 21unknown 14unknown 9Female Bella from Dam groupunknown 1unknown 20Juveniles sleepingunknown 4Female Kim with newborn infant KayaFemale Pinduli from Eco groupunknown 25unknown 3Subadult female Merlin in Dam groupunknown 19unknown 28Infant Bernieunknown 16Female Ashoka from Dam groupMale unknownFemale Tess with infant Truffle from Dam groupInfant from Eco on motorbikeunknown 7Male Frodo showing threat expressionMale Howard from Dam groupFemale Fanny grooming juvenileFemale Spikey with infant in Eco groupSubadult male Inounknown 17Females from Dam group sleeting togetherunknown 6unknown 27Juvenile female Brave resting on carunknown 15Sleeping adult males from Dam groupunknown 29Sleeping malesInfantsView on hanging bridgeunknown 12Funny Nose with infant from Dam groupFemale Funny Nose with infant in Dam groupInfant BernieMale Frodo from Dam groupunknown 8unknown 22unknown 10Juvenile female BraveFemale Amy from Eco groupFemale Kim with infant Kaya and juvenileunknown 18unknown 11unknown 2unknown 24unknown 23Juvenile from Eco groupBonnet macaque infantsFemale Scarlet feeding on flowersMale Pirate grooming male Victor

The Thenmala Macaque Project is a study of bonnet macaque (Macaca radiata) population in India. The project is based at the Institute of Human Biology and Evolution, the Adam Mickiewicz University in Poznań. Our work is carried out in collaboration with the University of Mysore (India) and University of California Davis (USA).

The aim of the Thenmala Macaque Project is to carry out research in behavioral ecology and conservation science. In addition to investigating the social dynamics and behavior of individuals, we are also interested in the effects of complex social structure and anthropogenic habitat on population dynamics and extinction.

The field work is carried out in Thenmala, Kerala, a part of the Western Ghats, in southern India. The study site consists of both human settlements and forest areas.

From 2019 – 2022, we focused on maternal care and personality development, and worked with two troops comprising around 80 individually recognized macaques in total. Data collection on this aspect of the project is now complete, and we are currently in the process of publishing our results, which you can find in our News section.

Since 2022, we have shifted our focus to studying affiliative behavior and relationships between male bonnet macaques. Our main goal is to investigate how social bonds between males affect their mating success as well as their health.

From the beginning of 2025, we broadened our study to also know more about the behavior of females and infants. Now, our study also concentrates on understanding female mate choice and the factors influencing consortship formation from both male and female perspectives.

Additionally, we are also investigating the development of sociality in infant bonnet macaques and the impact of the maternal social and dominance standing on it. The focus is on understanding how infants learn to communicate and connect with the other group members during the first year of their lives and how infants from different females differ from each other.

Research permission in India is kindly provided by the National Biodiversity Authority and the Kerala Forest Department.