200 BIRDS OF THE PUBLIC GARDEN 



oring on the head and throat of these birds 

 established them surely as Olive-backs. 



The song is rarely heard, and the call- 

 notes are given infrequently. But on May 

 1 8, 1908, an Olive-backed Thrush in a 

 beech which stands near the Everett statue 

 sang without ceasing for a half-hour or 

 more, quite as he would have sung in a 

 White Mountain forest such as he loves 

 so well. When I had passed through the 

 grounds and returned again to the vicinity 

 of this beech tree, the bird was still singing. 



114. Hermit Thrush 



Hylocichla guttata pallasii 



Of all the thrushes the Hermit Thrush 

 is by far the most abundant visitant to the 

 Garden. It comes the earliest and in con- 

 siderable numbers, and the migration in 

 some seasons has extended over a long 

 period. For instance, in 1902 a bird ap- 

 peared on March 13 and remained two 

 days. Another came on March 24 and also 

 remained two days. The last bird of that 

 season passed on May 11. The period of 



