This book, prepared by a leading group of European specialists in birds of prey, has been designed to review the current research in European forest-dwelling raptors. It deals with the methodologies used to assess the status of owls and raptors, their demographic trends, some relevant aspects of their biology and the potential impact on their populations of some traditional and emerging threats. It is thus a splendid tool to evaluate what happens today with this key group of birds and to plan future research programs directed to improve the conservation of European forest biodiversity.