Tiird^s fusoescens . 



Concord, Ivlass. 



1898. Ball's Hill and which sings every evening in the large red 

 June 21. oak on the edge of Holden's meadow sittixig invariably not on- 

 (!To.2). ly on the same "oranoh but actually on the same twig and alv^ays 

 facing towards the north-west. 



1899. Singing 17 days after first 



arrival. 



May 19. Wilson's Thrushes began singing to-day. I heard the 



first at 9 A.M. on the side of Ball's Hill. Gilbert heard 

 another near the cabin about the middle of the afternoon. At 

 evening there was protracted and general singing all around 

 the hill and in the blueberry swaiap behind it, at least five 

 or six birds taking part. All of then seemed to be in excel- 

 lent form, llhy is it that this species remains silent so 

 long after its arrival? I saw the first tliis season on luay 

 2nd and by the 10th they were abundant. Living, as I do here, 

 in the very midst of their favorite haunts I should have 

 known it had there been any singing before to-day. They have 

 called a little at morning and evening and uttered the bleat- 

 ing note but not once have I hoard the song before this moen- 

 ing. Seventeen days is a longer period of silence than usual, 

 however . 



