Migration of Birds


Read by Sue Anderson

Snow Geese which left James Bay, Canada, arrived at the Louisiana Gulf coast "60 hours later after a continuous flight of over 1,700 miles at an average speed of 28 miles per hour." This is just one of the many intriguing facts about bird migration contained in this 1998 circular from the U.S. Fish and Wildlife Service. Informative and up-to-date chapters discuss flight speed and rate of migration, migration routes, and techniques for studying migration. A final chapter, Future Directions, concludes "Migratory pathways evolved over the eons in expectation of a moderately stable environment with sufficient food and cover along appropriate corridors that connected sustaining winter ranges with suitable breeding areas... But human impacts on the environment generate rates of change that exceed many species' ability to adapt." Summary by Sue Anderson. (4 hr 8 min)

Chapters

Preface 3:37 Read by Sue Anderson
Introduction 7:24 Read by Sue Anderson
Early Ideas About Migration 8:34 Read by Sue Anderson
Techniques for Studying Migration 16:50 Read by Sue Anderson
Evolution of Migration 13:23 Read by Sue Anderson
Stimulus for Migration 10:02 Read by Sue Anderson
When Birds Migrate 17:44 Read by Sue Anderson
Flight Speed and Rate of Migration 19:02 Read by Sue Anderson
Migratory Flight Altitude 6:30 Read by Sue Anderson
Segregation During Migration 12:10 Read by Sue Anderson
Geographic Patterns of Migration 12:54 Read by Sue Anderson
Orientation and Navigation 18:16 Read by Sue Anderson
Influence of Weather 8:51 Read by Sue Anderson
Influence of Topography 4:38 Read by Sue Anderson
Perils of Migration 8:28 Read by Sue Anderson
Routes of Migration 42:14 Read by Sue Anderson
Patterns of Migration 27:44 Read by Sue Anderson
Future Directions 10:27 Read by Sue Anderson