BLACK-POLL WARBLER 161 



the peculiar song when heard at a distance, 

 strange to say, somewhat suggested a weak 

 song of the downy woodpecker. Ten days 

 later two Black-polls within the Garden 

 sang a song resembling the chipping spar- 

 row's trill, only shorter. 



Mr. Maurice C. Blake furnishes three 

 early autumn records of the Black-poll 

 Warbler in the Garden in its migration 

 south, namely, one of eighteen birds on 

 September 24 and one of seven birds 

 on October 5, in 1904, and one of a single 

 bird on September 8, 1905. 



During the last five years and also in 

 1900 I saw a few Black-poll Warblers in 

 the Garden in October, and in 1904 and 

 again in 1908, the movement to almost the 

 end of the month was continuous and abun- 

 dant, ten birds being recorded on October 

 17 and thirteen birds on October 23, in 

 1904, while in 1908 nineteen were counted 

 on October 10, twelve of them being 

 among the branches of one sycamore maple, 

 twenty-one on October 14, and seventeen 

 on October 19 ; upon the intervening days in 



