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Bird -Lore 



seen the first pair. In 1899 the larger clearing already referred to con- 

 tained three pairs, all of which nested and two of the broods were hatched, 

 and, I believe, left their nests at the proper time, but the third nest was 

 destroyed. In other clearings, within a distance of a mile or so, there 

 were a few Chestnut -sided Warblers, but they were by no means com- 

 mon. Each of the several clearings, except one, had a pair of the birds 

 that I knew of, perhaps they had more; but I doubt it, as I spent the 

 entire time from May till August in the vicinity and visited each locality 

 several times every week. 



In 1900 the Warblers were comparatively common, every clearing 



CHESTNUT-SIDED WARBLER AND YOUNG 



containing several pairs, and last summer they were still more abundant, 

 four pairs occupying a clearing of only a few acres, while in the large 

 clearing there were more than could be counted with accuracy; probably 

 not less than seven or eight pairs. 



What has influenced the rapid increase of these birds in this particular 

 locality is difficult to discover. Apparently there have been no great 

 changes so far as vegetation is concerned: the scrub is a little more dense, 

 and the second growth somewhat higher, but to the eye it would be diffi- 

 cult to find any marked changes other than these. While we are unable 

 to account for the increase of the Chestnut -sided Warblers, we find it 



