INTRODUCTION 



xni 



ROBIN 



Drawn 18th Century. 



this work can be obtained. 

 I therefore propose to give 

 two or three actual mea- 

 surements of distance. 

 The oyster - catcher on 

 page 249 was exactly nine 

 feet away, the common 

 curlew on page 29 within 

 sixteen feet, and the corn- 



ROBIN 



Drawn 19th Century. 



crake on page 108 six 

 feet off. We are often 

 asked why we do not 

 make more use of the 

 telephoto lens. My an- 

 swer is because, for one 

 important reason, we 

 require to gather in- 

 formation as well as 

 pictures, and for another 



ROBIN 



Photographed 20th Centura- 



