lO PROCEEDINGS MANCHESTER INvSTITUTE 



years in the case of the last named. Following, however, upon 

 the further reclamation of the territory of Jefferson from a state 

 of wildness to a country of farms and a general condition of 

 cultivation, as it becomes more settled and an older community, 

 these species, like others which have been named, ma}^ extend 

 their breeding ground nearer the Presidential Range and become 

 summer residents of Jefferson itself. On the other hand, the 

 elevation of Jefferson may continue to present a barrier, since 

 the Connecticut valley at L,ancaster is less than 900 feet above 

 the sea, while the valley of Israel's River is from iioo feet at 

 its bottom to 1450 feet where the village of Jefferson stands. 

 The probable nesting of the Warbling Vireo in Jefferson in two 

 recent years furnishes some basis for the thought that these 

 several species in time not remote ma}' extend their breeding 

 ground to favorable localities in Jefferson, although these be 

 higher and nearer the Presidential Range. 



The valley, as it reaches up eastward toward the base of 

 Mt. Jefferson, becomes very narrow at the foot of the Highland. 

 The slopes of Boy Mountain on the northerly side and those of 

 the Dartmouth-Deception Range with its foothill. Hardwood 

 Hill, on the southerly side leave only a width sufficient for the 

 the river, the highway, and the railroad. Through this narrow 

 valley the migration of the summer resident warblers in Septem- 

 ber from the mountain ranges and beyond is quite extensive. 

 With them always come a few Philadelphia Vireos and represen- 

 tatives of the warblers which do not breed in the immediate 

 region, namely, the Tennessee, the Cape May, the Palm, the 

 Yellow Palm, and the Connecticut. There are occasional days 

 in early September when many hundred migrant birds are pass- 

 ing westward through the growth along the river, apparently 

 bent on reaching the main Connecticut valley pathwa3^ The 

 larger flocks move steadily on and pass. Upon days when there 

 is no extensive movement a representative or two of the rarer 

 species may be found remaining in the same place a second or 

 even a third day. In a thick growth of small birches, but a 

 short distance from the river at the Meadows, a collection of 



