Table of Contents 



FOREWORD by William Rowan vii 



Part I. Travels of Waterfowl 



1 PATTERNS OF LOCAL MOVEMENT 3 



2 LEARNED RESPONSE TO THE ENVIRONMENT 14 



3 THE VISUAL WORLD 29 



4 THE FUNCTION OF MEMORY 46 



5 THE AERIAL ENVIRONMENT 55 



6 AWARENESS OF TIME AND SPACE 73 



Part II. Migrations of Waterfowl 



7 THE CYCLE OF MIGRATION 89 



8 FLIGHT TRAILS SOUTH 95 



9 HOMEWARD MIGRATION 114 



10 THE CLASSIFICATION OF WATERFOWL TRAVEL 135 



11 THE DIMENSIONS OF TRAVEL 149 



12 THE INFLUENCE OF BAD WEATHER 163 



13 OVERSEAS MIGRATION 177 



