Professor Perrins is a Leverholme Emeritus Fellow at the Edward Grey Institute of Field Ornithology, University of Oxford. He has accompanied an alumni tour to the Galapagos with Temple World before with great success.

Professor Perrins' main studies are population studies and breeding biology of birds especially a long-running study of the Great and Blue Tit populations in Wytham Woods (near Oxford, owned by the University), seabirds (mainly on Skokholm and Skomer Islands, Pembrokeshire) and Mute Swans. He was heavily involved in the issues of lead poisoning in swans which lead to the banning of use of most lead weights and he is also The Queen’s Swan Warden. He has published many scientific papers and books, including editing the later volumes of “The Birds of the Western Palearctic” and its Concise Edition. Professor Perrins has travelled widely and has been trip scholar on previous alumni tours to Paraguay, the Antarctic and Galapagos.