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TIMES OF MIGRATION. 51 
Chimney Swift, Least Flycatcher, Towhee, Purple Mar- 
é 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 isa 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 fal). 
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, Yellow. 
throated, and White-eyed Vireos, Long-billed Marsh 
Wren, Wilson’s Thrush, Redstart, Yellow-breasted Chat, 
Maryland Yellow-throat, Yellow Warbler, and others of 
its 
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 whole 
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