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on the watch for new birds. A warm south wind following a 

 long spell of cold weather early in May will sometimes bring a 

 great wave of bird life from the south. At such times the calls 

 and cries of flying birds may be heard all through the first part 

 of the night as they pass at different heights overhead, and a 

 visitor to the woods early next morning may find a host of 

 warblers there. Cold mornings, which occasionally follow such 

 a flight, bring the tired birds to the ground and low shrubbery, 

 in search of benumbed insects hiding there. Such a condition 

 greatly favors the observer. A cold storm coming after a warm 

 wave may have a similar effect by driving the birds from the 

 hills into the valleys. Such storms may also drive sea birds 

 and shore birds to shelter along the beaches, or to ponds and 

 marshes. Ordinarily, more land birds, both species and in- 

 dividuals, may be seen to advantage on still, warm days from 

 the 5th to the 20th of May, or before the leaves become large 

 enough to hide them from view, than at any other season. 



May is the best time to find small land birds not often seen 

 by beginners. When warblers are in tall trees they may be 

 seen to the best advantage while the leaves are still small, by 

 climbing a steep, wooded hillside where one can see them on a 

 level with the eye, or below it. The yellow-bellied flycatcher 

 may be found during the latter part of the month in quiet 

 swampy woods. The alder flycatcher may be seen almost any- 

 where in migration, but usually it flits about alder runs, ponds, 

 and swampy shores. Sometimes the song of the Lincoln's 

 sparrow may be heard along bush-bordered walls or on bushy 

 river shores. Often it is difficult to see this bird unless its 

 song is fpllowed for a time, as its tendency is to keep well 

 within the cover. 



The Cape May warbler and the Tennessee warbler are now to 

 be looked for in shrubbery in moist places, or along woodsy 

 river-bottom lands. Sometimes they come into the orchard or 

 the village street. The olive-sided flycatcher is seen in swampy 

 woods about some pond or stream, or in a near-by hill pasture 

 or orchard, while the crested flycatcher flits and loudly calls 

 in old neglected orchards near the. woods. » 



The great spring migration of the shore birds along our coast 

 comes in the last half of May and in early June. Black- 



