Colin Harrison Dr. Colin Harrison, an expert on bird zoology and paleontology, is the former principal scientific officer of ornithology at the British Museum (Natural History) in London.Dr. Douglas Palmer revised and updated this edition of the book. He was a senir lecturer in geology at Trinity College, Dublin, and now lectures on earth sciences for Cambridge University. He has written more than ten books on science, geology and prehistory, including The Atlas of Prehistory, and contributes regularly to Science, New Scientist and BBC Wildlife. Read More Read Less