"Collins Wildlife Trust Guides" are field guides illustrated with photographs that can be used to identify birds in the wild. Every species is comprehensively illustrated with specially chosen photographs, so that no matter what bird you see, whether male or female, adult or immature, there is a photograph. The text also covers details needed to confirm the identification, plus information on the biology of each species. There is also a distribution map for every species, showing where it occurs in Europe. The book is published in association with the Wildlife Trusts, who have over 250,000 members in the UK.