The first fully comprehensive account written in English of the avifauna of this zoogeographically important region. Based on field studies conducted from 1956 to 1991, it details the distribution, occurrence and status of all known species of Central Siberia, a region extending from the southern Siberian mountains north to the arctic islands of the Kara and Laptev seas. This region lies on the Yenisey zoogeographical boundary, a feature which stretches some 4000 km from north to south. The author describes the importance of this feature, and proposes a new interpretation of this important boundary. There are also descriptions of the area's natural conditions, a history of ornithological research, and discussion of the problems of protection and rational use of birds in Central Siberia. The bulk of the book is devoted to the systematic guide, which gives details of the distribution, habitat, range, abundance and breeding of 664 species. A highly important book on a previously poorly covered region.