DELAWARE VALLEY ORNITHOLOGICAL CLUB. 



41 



Name. 



verage Date 

 of First Ar- 

 rival. 



verage Date 

 of Bulk Ar- 

 rival. 







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Whip-poor-will 





April 27 



May 3 



White-eyed Vireo . 









April 27 



May 4 



Least Flycatcher . 









April 28 



May 4 



Black- throated Green Warbler 









April 28 



May 4 



Parula Warbler 









April 28 



May 4 



Kedstart 









April 25 



May 4 



Water-Thrush 









April 25 



May 4 



Crested Flycatcher . 









April 29 



May 4 



Kingbird .... 









April 29 



May 5 



Red-headed Woodpecker. 









April 16 



May 5 



Black-throated Blue Warbler 









April 27 



May 5 



Yellow-throated Vireo . 









April 29 



May 5 



Baltimore Oriole 









May 1 



May 5 



Solitary Sandpiper . 









April 22 



May 5 



Orchard Oriole 









May 1 



May 6 



Chestnut-sided Warbler . 









May 1 



May 6 



Blue-winged Warbler 









May 1 



May 6 



Kentucky Warbler . 









April 30 



May 6 



Scarlet Tanager 









April 28 



May 6 



Acadian Flycatcher 









May 5 



May 6 



Red-eyed Vireo 









April 30 



May 7 



Indigobird 









May 1 



May 8 



Worm -eating Warbler 









April 29 



May 8 



Rose-breasted Grosbeak . 









April 30 



May 8 



Chat . _ . 









April 29; May 8 



Warbling Vireo 









May 2 May 8 



Magnolia Warbler . 









May 1 



May 9 



Bobolink .... 









May 2 



May 9 



Olive-backed Thrush 









April 30 



May 10 



Blackburnian Warbler . 









May 4 



May 10 



Black-poll Warbler. 









May 6 



May 11 



Hummingbird 









May 3 



May 11 



Wood Pewee . 









May 3 



May 11 



Gray-cheeked Thrush 









May 3 



May 12 



Yellow-billed Cuckoo 









May 3 



May 12 



Black-billed Cuckoo 









May 6 





Long-billed Marsh Wren 









May 10 





Canada Warbler 









May 5 



May 12 



Nighthawk . 







iMay 4 



May 13 



