43 



County, at least, and is also colonized in good numbers in at 

 least one locality in Plymouth County. 



The Mourning Warbler is a bird of sprout-land, where timber 

 has' been cut off. It is common in such lands near the very 

 summit of Mount Greylock, but is not confined to the top of 

 the mountain. It has been met with in other parts of the 

 range, and also well to the eastward in Franklin County, but 

 apparently does not range very far east in Massachusetts. It 

 was found in its favorite sprout-land down to 1,000 feet. A 

 very few individuals have been reported in summer in eastern 

 Massachusetts, apparently stragglers. 



The Canada Warbler is widely distributed as a breeder over 

 most of the State, but is more common in western Massachu- 

 setts than in the eastern counties, where it is very local. It 

 seems to care little about altitudes or any particular kind of 

 vegetation, but in most parts prefers cool, moist places, such 

 as cedar swamps, for its breeding grounds. 



The Winter Wren was noted in the breeding season not only 

 in Berkshire County, where it may be seen on Greylock and 

 at other more or less high altitudes, but in Franklin, Hampshire 

 and Hampden counties at altitudes ranging down to 600 feet. 

 As a rule, it was found near a brook in the woods, often in a 

 ravine, but it is not by any means confined to spruce or even 

 to coniferous trees, but is seen in mixed woods. 



Golden-crowned Kinglets breed in the spruces on Mount 

 Greylock, and in other stands of this tree in Berkshire County, 

 also intermittently or sporadically elsewhere in western Massa- 

 chusetts. They formerly bred in northern Worcester County 

 in swamp spruces at an altitude of about 1,200 feet, but no 

 one has reported them there recently. Mr. Farley and other 

 observers saw them and their young this year only in Berk- 

 shire County. 



Bicknell's Thrush was not recognized this season even on 

 Greylock. It seems quite possible that the collectors have 

 extirpated this bird here within the past few years. On the 

 other hand, rare species like this come and go. It may ap- 

 pear next year. 



The Olive-backed Thrush is a bird of the spruce and the fir. 

 On Greylock it was noted down to 2,500 feet, elsewhere down 



