EVOLUTION OF BIRD- SONG 



There were many other apparent imitations less 

 frequently heard. The cry called be quick, often 

 heard in the song of the thrush, and which blends 

 into imitations of the common call of the nuthatch 

 and the cry of the guinea-fowl, are not mentioned 

 in this table. This was sung much more than the 

 1 1 5 times I have recorded as noted in an aggregate 

 of 29 thrushes. The reader must not suppose 



