He is the world's leading authority on zoo design. Creating Humane living environments and habitats for people, animals and plants. Participating more than 160 planning and design projects for 85 zoos, aquariums, botanical gardens, theme parks and national parks in 15 countries around the world. For design projects. Authored and lectured on the history, theory and trends of zoos.
Behavioral research scientist, wildlife conservationist, Professor Emeritus (Georgia Institute of Technology) and Atlanta zoo director emeritus.He is best known for his 18-year tenure as director and later President and CEO of Zoo Atlanta where he transformed the troubled zoo into a model institution and a fiscally sound cultural attraction.
Zoological Consultant/Worked in zoos in Australia, New Zealand, Canada and other countries in various positions in the field, from keeper to manager.During his more than 30-year career, he has worked as a translator on the boundaries of issues: animal welfare, practical design, organisational policy and politics. He continue to interpret, for diverse audiences, how animals behave, what animals need and how these needs can and should be met.
Co-Director of Massey University’s Animal Welfare Science and Bioethics Centre (School of Veterinary Science), a World Animal Health Organization (OIE) Collaborating Centre. Conducting research that employs behavioural and physiological methods to investigate various aspects of animal welfare. Major research themes include:
・Systematic scientific evaluation of animal welfare・Conservation Welfare: Welfare impacts associated with wildlife conservation activities・Welfare impacts of methods of "euthanasia''・Humane vertebrate pest control・Novel methods for evaluating pain in farm animals