CONTENTS 



PAGE 



FOREWORD iii 



PART I 



WHY BIRDS NEED PROTECTION 



CHAPTER 



I. AN INTRODUCTION TO SOME WINTER GUESTS i 



II. THE DESTRUCTION OF BIRDS BY THE ELE- 

 MENTS AND BY DISEASE . . .10 



III. THE DESTRUCTION OF BIRDS BY THEIR 



NATURAL ENEMIES .... 20 



IV. THE DESTRUCTION OF BIRDS BY MAN AND 



BY CERTAIN ANIMALS FOR WHOSE 

 PRESENCE MAN is RESPONSIBLE . 39 



PART II 



WHY IT IS WORTH WHILE TO GIVE BIRDS PROTECTION 



V. THE MONEY VALUE OF BIRDS . . .81 



VI. THE ESTHETIC AND MORAL VALUES OF 



BIRDS 115 



xiii 



