PREFACE vii 



Dimorphism. Our next stage in their Story 

 brings us to their marvellous methods of Court- 

 ship, their Love Displays, their bridal Songs and 

 Cries and Sounds. This is fittingly succeeded by 

 a scientific study of their Nests and Eggs, which 

 brings their Story to a close. 



CHARLES DIXON. 



Paignton, S. Devon. 



