The Singing of Birds. B. P. Bioknell. 



Helminthotherus vermivorus. WoRM-iiATiNc Warbler. 



Commonly remains in song after its arrival until the second 

 week of July. Sometimes singing ceases a little earlier than this ; 

 again, in other years, songs are to be heard into the third week 

 of the month. 



The second song-period of this Warbler I can speak of only 

 from one season's experience. On July lo, 1881, several of these 

 birds were silently inhabiting a small tract of woodland, their 

 first season of song having passed ; here, on August 14, and again 

 on the 21 St, they were found in fine plumage and in full song. 



The songs of no other three birds known to me are more alike 

 than those of the Worm-eating Warbler, the Chipping Sparrow, 

 and the Slate-colored Snowbird. Atlk, I, Jaly, 1884. V.Z/0 



