18 PROCEEDINGS OF THE 



hereabouts in the earlier year, but we could gather no evidence 

 of recent progenies. Here the Black-throated Green Warblers 

 were incessant with song but no nest of the year could be found. 

 Baily remarked that we were approaching the area where he 

 had encountered the Nashville Warbler in other springs. Shortly 

 he detected a song in the distance which he identified as of this 

 bird. Presently we reached a partial clearing. Tamarack, 

 balsam and spruce formed the principle tree-growth of the area ; 

 viburnum and low huckleberries the shrub material and rolling 

 mounds of sphagnum the ground cover ; conditions relating to 

 a typical Canadian swamp. This was the haunt of the Nash- 

 ville Warbler as well as a similar area about one hundred yards 

 distant. Only in these two places were the birds noted during 

 the five days of our stay. Baily had told us how he had found 

 it nesting here two years previously, and how he had photo- 

 graphed the bird upon its nest. 



We heard probably four singing birds altogether in the two 

 bogs. They were not birds to be confidential with. Only with 

 the greatest care might they be approached. The very restless- 

 ness of their nature seemed to impel them to be always on the 

 move and to indulge in incessant song. The song comprised 

 two distinct phrases; the first, a tsipd, tsipd, tsipd, tsipa re- 

 preated from four to six times and in character suggestive of 

 the deliberate, introductory notes of a Blackpoll Warbler's 

 song ; the second, a clear trill, similar to the notes of the Pine 

 Warbler ; altogether a very easy song to become familiar with. 



After a thorough search of the two districts, upon the author- 

 ity of Baily, we were able to announce three nests. These were 

 all placed in the sides of sphagnum mounds and were lined 

 with pine needles and soft grasses. One had a hole through 

 the bottom of it. None of these contained eggs and no birds 

 had been flushed from them. We waited about for hours hop- 

 ing to see a nest visited, but no bird would approach closer 

 than a nearby tree where perchance it would perch and sing 

 lustily. 



Another bird of this area, which we were coming to be ac- 

 quainted with, was the Yellow-bellied Flycatcher. It haunted 

 the same open bogs as the Nashville and although its plain- 



