I am an evolutionary ecologist with a broad interest in behaviour, ecology and conservation. I am keen to uncover fundamental principles governing behavioural responses in animals and how these feed back at the population- and ecosystem level. My current research centres on three themes: (i) biodiversity conservation and past/present/future links between human societies and biodiversity, (ii) the evolution and function of animal communication systems, and (iii) sexual conflicts and the evolution of reproductive strategies. In my research, I combine both theoretical and empirical approaches, primarily using ungulate study systems. I have been running the Masai Mara Herbivore Research Project in Kenya since 1998.