TIMES OF MIGRATION. 51 



Chimney Swift, Least Flycatcher, Towhee, Purple Mar- 

 tin, Cliff and Bank Swallows, Black and White and 

 Black-throated Green Warblers, Oven-bird, House Wren, 

 Brown Thrasher, Catbird, and Wood Thrush. This 

 troop surely is not without musicians. In ringing 

 tones they herald the victory of Spring over Winter. 



The season of cold waves has passed, and the birds 

 now appear with the regularity of calendar events. 

 From May 1 to 12 the migration reaches its height. 

 It is a time of intense interest to the bird student, and 

 happy is he who can spend unlimited time afield. 

 Some mornings we may find ten or more different spe- 

 cies that have come back to us, and each one may 

 be represented by many individuals. The woods are 

 thronged with migrants, and the scantily leaved trees 

 and bushes enable us to observe them far more easily 

 than we can when they travel southward in the fall. 

 During this exciting period we should see the Cuckoos, 

 Nighthawk, Ruby -throated Hummingbird, Crested Fly- 

 catcher, Kingbird, Wood Pewee, Baltimore and Orchard 

 Orioles, Bobolink, Indigo Bunting, Rose-breasted Gros- 

 beak, Scarlet Tanager, Red-eyed, Warbling, Yellowv 

 throated, and White-eyed Yireos, Long-billed Marsh 

 Wren, Wilson's Thrush, Redstart, Yellow-breasted Chat, 

 Maryland Yellow-throat, Yellow Warbler, and others of 

 its family. 



Succeeding days will bring additions to the ranks of 

 these species, and there will also be numerous small 

 Warblers to look for, but by May 12 all our more 

 familiar and common birds have arrived. During the 

 rest of the month, as the transient visitants, or species 

 which nest farther north, pass onward, birds gradually 

 decrease in numbers, and by June 5 we have left only 

 those that will spend the summer with us. 



The migration over, we can now give our wbote 

 5 



