My reseach concerns the interface between evolution and ecology, particularly in reptiles (snakes and lizards). In recent years, my work increasingly has shifted to focus on major issues in conservation - especially the biology, impact and control of invasive species such as the cane toad. I have worked extensively on evolutionary transitions in life-history traits and on sexually-selected traits. I am also interested in the interplay between different aspects of oganismal biology, and how we can translate the results of 'academic' research into effective conservation.