"The Atlas of Breeding Birds in Bulgaria" is the first ever publication of its kind for this country and contains the most complete information about the breeding bird fauna in the country. Based on standard methodology, it covers virtually all 1240 10x10 km squares on the territory of Bulgaria for the period 1996-2005. 297 species accounts are presented, with a black-and-white drawing, and information on status, population size, distribution, habitat, altitude range, and distribution map. "The Atlas" represents a scientific basis for the identification of Important Bird Areas in Bulgaria, for future monitoring, as well as for successful conservation.