CONTENTS 



CHAP. PAGE 



PREFACE AND INTRODUCTION v 



I. THE THEORY 1 



II. CONSPICUOUSNESS IN NATURE . . .12 



III. CONSPICUOUS COLOUR . 21 



IV. THE SELECTING POWER OF ENEMIES . . 42 

 V. FAMILY INSTINCTS 62 



VI. THE COPULATORY ATTITUDES OF THE PAIR . 67 



VII. PRE-COPULATORY DISPLAYS .... 73 



VIII. SEXUAL COLOUR 78 



IX. PARENTAL COLOUR . ... 91 



X. PARENTAL AND SEXUAL CHARACTERS . . 98 



XI. CONSIDERATION OF BRITISH BIRDS . 107 



XII. HUMAN AND OTHER SOCIETIES . .122 



