PhD (Arts), PhD (Vet Sci), hon. D.Sc; Prof of Animal Behaviour, University of New England. Honorary professor at the Brain Institute (University of Queensland). Over 250 research articles, 20 books. Books on orang-utans (1994,1999, 2000); Songs Roars and Rituals. Communication in Mammals. (2000); Birds. Their Habits and Skills (2001), Comparative Vertebrate Cognition (2003); Australian Magpie (2004, 2008); Tawny Frogmouth (2007). Forthcoming book: Bird Minds-Australian birds (in press).