OF ARTS AND SCIENCES. 163 



amount. Thus one finds breeding birds at an altitude of from 

 i, 800 feet in rich, damp coniferous woods on southern expos- 

 ures, up to about 4,000 feet among the small balsam timber. 

 The two birds in respect to their ranges are perhaps somewhat 

 comparable to the Olive-backed and the Bicknell's Thrushes, the 

 former inhabiting the lower altitudes and ranging upward into 

 the stronghold of the latter. Mr. C. J. Maynard found this a com- 

 mon breeding bird at Lake Umbagog thirty years ago, though 

 apparently he did not observe D, striata breeding there. Mr. 



F. H. Allen tells me that on the Sandwich range he has found 

 the bird common in the breeding season in the vicinity of Water- 

 ville. Mr. M. Chamberlain ('91, Vol. I, p. 238) has also re- 

 corded that a nest was found on Mt. Chocorua by Frank Bolles, 

 but the identification appears not to have been certain. South of 

 this range, I have no actual evidence of the breeding of this 

 species, but Mr. C. F. Goodhue ('yya, p. 33) has recorded that 

 young birds hardly able to fly and still fed by their parents, were 

 observed at Webster in the latter part of July about 1875. Mr. 



G. H. Thayer also writes me that he observed a pair in late 

 May, 1897, in a deep hemlock and deciduous wood oh Monad- 

 nock, with nesting material in their bills, and states that they 

 showed great anxiety when their vicinity was approached. 

 Whether or no the birds did nest was not ascertained. In fall, 

 owing to the difficulty of distinguishing this species from the 

 Black-poll Warbler, observations are less easy to make, but I 

 am inclined to think they migrate more or less with the latter, 

 and I have taken specimens in the woods at 2,000 feet from 

 mixed flocks of warblers. In the month of May, 1900, owing 

 to the occurrence of cold waves, these and other northbound 

 migrants lingered in unusual numbers throughout southern 

 New England instead of passing by to their breeding grounds. 



Dates : May 14 to 28 ; Summer to September. 



218. Dendroica striata (Forst.). BLACK-POLL WAR- 

 BLER. 



A very common spring and fall migrant over the southern 

 parts of the state, and a common summer resident of the upper 

 Canadian zone on the White Mountains and northward. On 



