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) the evolution and function of animal communication systems, (ii) sexual conflicts and the evolution of reproductive strategies, and (iii) biodiversity conservation with an emphasis on addressing issues related to climate change and overharvesting in developing economies. 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.