An important guide which concentrates on the identification problems of 91 confusing species groups, (i.e. over 200 species such as Marsh Tit and Willow Tit). Aimed not only at beginners but at experienced birdwatchers alike, it uses colour plates with handwritten captions to illustrate the key differences. The text includes the latest identification criteria, and comments on variations in age, sex, season and race, as well as flight, call, distribution and habitat.