234 



EVOLUTION OF BIRD-SONG 



instance the notation is probably from one to two 

 octaves lower than the actual notes it represents. 



In September 1890 I heard a cock utter an 

 unusual crow : 



In the following September, at a different place, I 

 heard another uttering this cheerful strain : 



In the city of Vancouver a rooster uttered his 

 clear, long crow in three notes, as follows : 







There was sometimes a slight falling in pitch at the 

 close of the long final note. 



At Sidcup, in November 1895, a fowl habitually 

 drawled the following : 



A cock-crow is usually of this character : 



