BRITISH WARBLERS 



peculiar rattling sound, the clear notes then follow and con- 

 tinue for some minutes in succession. In addition to the song- 

 there are numerous call notes, difficult to express in words, but 

 the one most frequently used resembles the call note of the 

 Hawfinch, so that when a number of males are close together 

 the sound produced reminds one of a small flock of that 

 species in flight. To my ear the call note of the female 

 appears to be somewhat different from that of the male. 



