Flicker 



Whip-poor-will 



Nighthawk 



Chimney Swift 

 Hummingbird 



Kingbird jMay 4 



Crested Flycatcher 



Phoebe 



Bobolink 



Cowbird 



Red-winged Blackbird, 

 Baltimore Oriole 

 Purple Grackle, 

 Chipping Sparrow 



Chewink 



Indigobird 

 Scarlet Tanager, 



Purple Martin 



Barn Swallow 



Red-eyed Vireo 



Black-and-white Warbler 



Chestnut-sided Warbler, 



Ovenbird 



Miiryland Yellow-throat. 



Chat 



Catbird 



Brown Thrasher 



House Wren 



Wood Thrush.... 



Hermit Thrush... 



Robin 



Bluebird 



TABLE II. 



SPRING MIGRATION, 1918. 



Earlifst dates of arrival of 

 thirty-two species at eighteen 

 stations outside the philadel- 

 phia circle. 



