CONTENTS 



CHAPTER PAOB 



1. ANCESTORS 1 



II. FEATHERS 19 



III. THE FRAMEWORK OF THE BIRD 62 



IV. THE SKULL 103 



V. ORGANS OF NUTRITION 116 



VI. THE FOOD OF BIRDS 142 



VII. THE BREATH OF A BIRD 1 65 



VIII. MUSCLES AND NERVES 188 



IX. THE SENSES 203 



X. BEAKS AND BILLS 223 



XI. HEADS AND NECKS 252 



XII. THE BODY OF A BIRD 285 



XIII. WINGS 319 



XIV. FEET AND LEGS 353 



XV. TAILS 398 



XVI. THE EGGS OF BIRDS 427 



XVII. THE BIRD IN THE EGG 462 



APPENDIX Brief List of Useful Books 483 



INDEX 485 



xi 



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