OF ARTS AND SCIENCES. 159 



or less Usnea ; it occurs frequently, however, in growths where 

 there seems to be little of this moss, and delights to feed among 

 red oaks. I have not observed it above 2,500 feet in the White 

 Mountains, and it is hardly a common bird in the coniferous 

 woods of that region. 

 Dates : May 3 to October 1 . 



211. Denclroica tigrina (Gmel.). Cape May War- 

 bler. 



A rare spring and fall migrant in the central and southern 

 parts of the state, and an irregular summer resident of the Cana- 

 dian forests to the north of the White Mountains. Mr. C. J. 

 Maynard ('72) records it as formerly common at Umbagog, 

 breeding in the thick evergreen woods, and according to Mr. 

 Wm. Brewster ('95) it was a really abundant summer resident 

 there from 1871-75, but before 1879, had quite deserted the 

 region. I do not know of its occurrence in summer among the 

 White Mountains, though Mr. Bradford Torrey ( : 00) records 

 that he observed a male in full song at the " Landaff Larch 

 Swamp" among the Frauconias, almost daily from the 22d of 

 May to the 3d of June, 1899, after which date he was called 

 away. Mr. G. H. Thayer writes of having twice observed the 

 bird in fall at Dublin. Local observers record in the Proceed- 

 ings of the Manchester Institute of Arts and Sciences, Vol. II, 

 p. 82, that it was observed in some numbers at Manchester dur- 

 ing the phenomenal warbler migration of May, 1900. 

 Dates : May 10 to September. 



212. Denclroica aestiva (Gmel). Yellow Warbler. 

 A not uncommon summer resident in the Transition valleys 

 of the southern and western parts of the state, but rare or ab- 

 sent in the White Mountain valleys and northward. In the 

 Merrimack valley the bird is common at least as far up as Con- 

 cord, and elsewhere in the southern valleys it is of general oc- 

 currence. North of Lake Winnepesaukee it is very local. 

 About Newfound Lake a small number annually breed, and at 

 Ossipee, Mr. E. A. Preble has once found it nesting. Dr. 

 Walter Faxon found a single pair in the willows on Gale river 



