Tile Singing of Birds. E.P.Bicknell. 
Siurus motacilla. Large-billed Water-Thrush. 
My notes on this species, although incomplete, seem to indicate 
two song-periods ; the first ending in June or early in July ; the 
later confined to a brief period of late July or early August. I 
do not regularly hear its song after June has well advanced, but as 
the birds are not common near me, I have not had opportunity 
for full observation. Before the end of July the birds seem to 
feel the migrating impulse and begin to grow restless. They may 
then be found in places which have not known them through the 
breeding season, and songs, often of full continuance and power, 
may again be heard. My record gives July 22 and August 4 as 
limiting dates for the brief second song-period. 
Auk, I, July, 1884. p. X! *> 
