Apr.27 

 Apr. 30 

 Apr. 24 

 Apr. 28 



Flicker 



Wliip-poor-wi" 



Niglithawk 



Chimney Swift 



Hummingbird 



Kingbird 



Great-crested Flycatcher. 



Phoebe 



Bobolink 



Cowbird 



Red-winged lilackbird.... 



Biiltimore Oriole 



Purple Gruckle 



Chijiping Spiirrow 



Chewink 



Indigobird 



.Scarlet Tanager 



Purple Martin 



Barn Swallow |Apr.27 



Red-eyed Vireo 



Black and White Warbler . 



Chestnut-sided Warbler 



Ovenbird 



Maryland Yellow-throo.t. ,. 



Chat 



Catbird 



Brown Thrasher 



House Wren 



Wood Thrush 



Hermit Thrush 



Robin 



Bluebird 



Mar. 23 

 Apr.27 



Res. 

 Feb. 27 

 May 2 

 Feb. 27 

 Mar.30 

 Mar, 11 

 May 5 



A pr. 



Apr. 2(5 



Apr.27 

 May 

 Apr. 24 

 Apr.27 



Apr.30 



Res. 

 Res. 



May 1 

 May 2 

 May 1 

 Apr. 4 

 May 1 

 May 1 

 Apr.13 



Res. 



Res. 



TABLE II. 



SPRING MIGRATION, 1911. 



Eakliest dates of arrival of 

 thirty-two species at fifteen 

 stations outside the philadel- 

 phia circle. 



