YELLOW WARBLER 153 



been carried to a successful termination, 

 some young friends assisting much to keep 

 track of the flights of the warbler as it 

 passed through long distances of air from 

 us. It was present upon this day only. 



76. Yellow Warbler 



Dendroica cBstiva 



The Yellow Warbler, or Summer Yellow- 

 bird, becomes a somewhat common bird in 

 the Garden during the month of May, but 

 before the end of the month the last indi- 

 viduals have disappeared. It is not prob- 

 able, therefore, that the species nests within 

 the Garden. Yet there may have been ex- 

 ceptions to this statement unknown to the 

 writer. The earliest appearances have been 

 on May 3, in 1905 and 1906. In other years 

 the arrival has been between May 7 and 10, 

 having been twice on May 8 and three 

 times on May 9. The earlier birds disap- 

 pear and are succeeded by others. This 

 may occur two or three times. In two 

 seasons only has the Yellow Warbler re- 

 mained beyond May 24, the last bird usu- 



