56 

 Wayne Counties, it is very rare but nests regularly as far 

 south as southern Bucks County, where it has been found 

 about Bristol and Newtown. In parts of Montgomery County, 

 it is not rare, and I saw several breeding patrs at Amber in 

 1912, where Mr. Gillin has collected a set of eggs. Mr Mil- 

 ler has observed birds at Bridesburg as late as June 5, 1902 

 and June 17, 1910, and in 1907, I noted two pairs on the 

 Tinicum meadows thruout the summer. At present, I know of 

 several localities where the Bobolink breeds within twenty 

 miles of Philadelphia. The fact must be borne in mind, how- 

 ever, that' it is extremely local in Pennsylvania and does 

 not generally nest south of the Alleghanian fauna. 



495. Molothrus ater ater ( Bodd . ) . Cowbird. 



This notorious shunner of parental duties breeds 

 regularly thruout the state, being more common in the open, 

 farming country with small woodlots than in the more exten- 

 sive mountain forests. It is apparently most abundant in the 

 southern half of the state and least so in the northern 

 counties. 



