97 



common in the open country of the Alleghanian and Canadian 

 faunas than along the southern border of the state. In 

 southwestern Pennsylvania it is a rare bird, being replaced 

 in Greene County by the Berwick's Wren and becomes more 

 common from Clarion County northward. About Philadelphia, 

 the House Wren is much less common than heretofore but grows 

 more abundant to the north, where on the Pocono Plateau, it 

 is one of the characteristic. species. 



722. Nannus hiemalis hiemalis ( Vieill . ) . Winter Wren. 



This minute inhabitant of the northern coniferous 

 forests still nests regularly in those portions of the state 

 having a well pronounced Canadian fauna, tho generally it is 

 much less common than it used to be. It breeds most frequent- 

 ly in the coniferous forests of Cullivar, Wyoming, Potter, 

 i.'cXean, and Warren Counties. On the Pocono Plateau and in 

 Pike County, I have found this to be a rare breeding bird, 

 tho a few pairs nest there each year, and it still breeds 

 in practically all of the northern tier of counties with 

 the exception of Erie. 



724. Cistothorus stellaris (Licht . ) . Short-billed Marsh Wren 



At the present time there seems to be but one 

 authentic record of the breeding of this bird within the 



