CHAPTER IV. Altitudinal or Vertical Migration

Kapitel in diesem Buch

1. Frontmatter i
2. PREFACE vii
3. CONTENTS ix
4. CHAPTER I. Introduction 1
5. CHAPTER II. Nocturnal and Diurnal Migration 39
6. CHAPTER III. Regularity of Migration 73
7. CHAPTER IV. Altitudinal or Vertical Migration 106
8. CHAPTER V. General Observations on Lines of Migratory Flight 134
9. CHAPTER VI. Migration Among Shore-birds 165
10. CONCLUSION 217