776 Transactions. 
It is probable that the song is an indication of the awakening and the 
stirring of sexual emotions, as the scent of the flower is an indicatior 
le, and ovat 
warblers practise their song before the arrival of the е would appe 
to be as much incidental as significant.. Swallows usually arrive in pal 
(WW, p. 59). a 
Is the song to be considered sexual when both sexes sing, as do t 
and bell-bird 1 І have detected no difference in the songs of the mi 
female tui. The song of the male bell-bird is quite different from 
of the female, but the song of the latter is heard far more freq! 
I have heard the song hundreds of times, but have heard the song 
вар only twice. i 5 
. Is there a single recorded instance (except, perhaps, amongst ci 
birds) of a female having shown that RR ae of shi hake attracted 
I have never seen a single instance. Twice I have seen a male bli 
the song, either of cicada or thrush, lessened in consequence, e! 
volume or charm. If it be said that the female shows subsequentl 
she acknowledged the attraction, how is it known ? i 
Birds appear to sing in emulation ; and, whilst emulation may 1 
be connected with courtship, birds will sing in emulation when CoU 
has ended successfully in the securing of а mate—when it ma; 
be said that emulation has passed in a natural course to 
