Gatherings of Angels: Migrating Birds and Their Ecology

The use of radar was an important tool in understanding bird migration. Early radar echoes of flying birds were referred to as angels. This book provides specific examples of species life history and migratory patterns, the disappearing wildlands it needs, and the behind-the-scenes dramas that have shaped the environmental movement.

Pages in crisp, clean condition. Some wear and discoloration to cover (see photo.)