| Professor of Biology, Zoology, and Ecology, emeritus. Ornithologist specializing in raptors. Lecturer. Artist.
Author/illustrator of Raptors of California, Owls of California and the West, and Mammals of California (all published by University of California Press). Artist for many well-known bird field guides, including Birds of South Asia; The Ripley Guide by Pamela Rasmussen (Smithsonian National Museum of Natural History). The Mexican Postal Service has made some of my paintings into postage stamps, to promote conservation. Although I live in the USA, Asia is my favourite travel destination.