94 

 nearly all regions typical of the northern fauna. 



687. Setophaga ruticilla (Linn.). Redstart. 



This active, fiery-hued, little warbler nests over 

 practically the whole state hut is very local and is irreg- 

 ularly distributed. In southwestern Pennsylvania, Mr. Dickey 

 finds it common even in the typical Carolinian fauna of Greer.< 

 County, while it is a frequent breeding bird north thru the 

 mountainous regions of Warren County. In central Pennsylva- 

 nia it is scarce and absent from many sections, while in 

 the lower Susquehanna Valley it breeds regularly. About 

 Philadelphia the Redstart is never a common breeding bird 

 but nests regularly along the Susquehanna River, VTissa- 

 hickon, Cram, and Pennypack Creeks. In the Alleghanian 

 fauna it becomes more abundant and nests on the Pocono 

 Plateau and thru the northern tier of counties. 



703. Mimus polyglottos polyglottos (Ling.). Mockingbird. 



The Mockingbird is a very rare summer resident in 

 the counties lying along the Southern border of the state. 

 Years ago it was reoorded as being more abundant, but at 

 present its nesting is so rare and irregular that it might 

 almost be called accidental. In 1901, Mr. W. F. Roberts 

 found a nest with four eggs in Solebury Township, Bucks 



