The Spanish Imperial Eagle is the most endangered eagle of Europe. With an estimated population of approximately 120 pairs, it is also one of the most scarce birds of prey on earth. Its distribution is limited to Mediterranean habitats of south-western Spain. This book deals with the ecology of the Spanish Imperial Eagle. It contains all available, up-to-date information on the species, most of which is the result of the scientific work carried out by Miguel Ferrer over the past eleven years. Miguer Ferrer is a researcher at the Doñana Biological Station, an institute belonging to the Spanish Higher Council for Scientific Research.