Harrier, Hawk of the Marshes: The Hawk That Is Ruled by a Mouse

Very Good used paperback. Some aging to inside front cover.

Illustrated with black & white photos, illustrations, and graphs.  Discusses the physical characteristics and habits of the Northern harrier hawk as revealed in a twenty-five year study.  With a foreword by Roger Tory Peterson.  Illustrated by Jonathon Wilde.  Photographs by Frederick Hamerstrom.