154 BIRDS OF THE PUBLIC GARDEN 



ally departing on May 21, 22, or 23. But in 

 1904 three birds were present on May 26 

 and in 1908 two singing males were present 

 up to May 27. There has been no exten- 

 sion of stay over this time. 



Two, three, or four Yellow Warblers are 

 all there are usually in the Garden in any 

 one day, and many days one only has been 

 present. But five birds were recorded on 

 May 14, 1907, three males and two females, 

 and the same number on May 26, 1908, 

 four being male birds. The males sing. 



77. Black-throated Blue Warbler 



Dendroica ccerulescens 



From two to four Black- throated Blue 

 Warblers have been recorded in six of the 

 nine seasons. In 1908 there were six vis- 

 itants of the species. In 1901 and 1904 no 

 bird was noted. The earliest appearance 

 was on May 7, 1905, when a male bird 

 arrived in song. The first visitants have 

 variously come between May 7 and 19, but 

 usually between May 9 and 13. The last 

 one generally departs between May 21 and 



