I am studying mother-offspring relationships in a wild population of mandrills, using the long-term data collected for over 10 years at the Projet Mandrillus, in Gabon. My focus is on the intergenerational effects of maternal early-life adversity (specifically the death of their mother and the birth of a close-in age younger sibling, as well as the environment) and how the maternal body condition, stress, experience and rank translates in different maternal care and style, and its impact on offspring development, health and fitness.