Part of an illustrated series that provides full descriptions of the 770 species that occur in the Western Palearctic, this volume contains sections on field characteristics, habitat, distribution, social behaviour, breeding, food, plumage and geographical variation. Details of regular migration and accidental species appear under the relevant headings. Specially commissioned colour plates depict the full range of normal plumage, together with in-flight views. The volume also features figures which show display postures, voice sonograms and melograms, and annual cycles.