Raptors offers a comprehensive and accessible account of raptors, including their evolutionary history, their relationships to other groups of birds, their sensory abilities, their general natural his
Keith L. Bildstein has studied migrating raptors on four continents and directs the conservation science program at Hawk Mountain Sanctuary, Pennsylvania, the world's first refuge for migratory birds
Inspiring and heartbreaking at turns, this terrific collection of 25 autobiographical essays gives the reader an insider's view into the study of eagles worldwide, many threatened and some near extinc
