OP ARTS AND SCIKNCES. 179 



the Canadian area. It is common as a spring and fall migrant 

 throughout the state and less common as a winter resident at 

 least as far north as the coniferous forests of the White Moun- 

 tains. In southern and central New Hampshire it is found in 

 summer almost wholly in spruce woods, and sometimes a pair 

 will spend the entire season in a grove of these trees of very 

 small extent. On the White Mountains, the birds occur in the 

 warmer mouths up to the limit of tree growth at 4,800 feet as I 

 have noted on Mt. Madison. In the Carter Mountains on Sept. 

 5, 1899, I observed considerable numbers of Kinglets in the 

 thick balsam forest on Carter Dome (4,860 feet). In flocks of 

 from four or six birds to in one case forty, they seemed to be 

 moving down the mountain, passing us by as we ascended. 

 Mr. G. H. Thayer finds this a common breeding bird in the 

 spruce woods of Mt. Monadnock and at other places in the 

 southwestern part of the state it occurs locally in summer. 



246. Regulus calendula (LJun.). Ruby-crowned 

 Kinglet. 



A common spring and fall migrant. It is not positively known 

 to summer in the state, and Mr. F. H. Allen is now inclined to 

 the belief that the birds noted by him ('89) as seen in early Au- 

 gust, 1885, at Moultonboro, were not of this species. The 

 first fall migrants appear in the White Mountain valleys in ear- 

 ly September, and I have seen them at Intervale by the 9th of 

 that month. 



Dates : April 14 to May 11 ; September 9 to October 10. 



Note: Polioptila caerulea (linn.). Blue-gray Gnatcatcher. 



This species is recorded in Vol. 2 of the Proceedings of the Manchester 

 Institute of Arts and Sciences (pp. 77, 83) as having been seen at Man- 

 chester on May 10, 1900, by two ladies. Although the Blue-gray Gnat- 

 catcher is known from southern Maine, and might thus accidentally oc- 

 cur in New Hampshire, its presence in the state does not seem sufficient- 

 ly authenticated to warrant its inclusion in this list. 



247. Hylocichla mustelina (Gmel.). Wood Thrush. 



A rare summer resident, of occasional occurrence in the Tran- 

 sition valley bottoms so far north at least as the White Moun- 

 tains. Apparently this bird has slightly extended its range 



