David Brewer started bird watching when he got his first bicycle, at about age eleven, and got a master bird-banding permit at seventeen. By profession he is an organic chemist, with degrees from Cambridge and Glasgow; he spent much of his spare time in Scotland banding Gannets and has the scars to prove it. After graduation he did a years' fellowship at the University of Arizona, from where he made many forays into Mexico, thereby starting one of his major interests, Neotropical birds. Since retirement from Uniroyal Chemical in Guelph he has spent his time travelling (to all seven continents), guiding on Polar cruises (he's been to Antarctica twenty-five times and the North Pole three) and writing bird books, including a birders' guide to Central America. His main interests are bird conservation, banding and migration.