64 

 fauna and seems to be gradually pushing its way to the 

 north. Thruout eastern Pennsylvania, it is irregularly 

 abundant as far north as Northampton County, while in Center 

 County as well as in Huntingdon, it is abundant. Mr. Dickey 

 finds it common in Green County, but in the northern tier 

 it is almost unknown, tho it accurs rarely in Erie County. 



547. Passerherbulus henslowi henslowi ( Aud . ) . Henslow's 

 Sparrow. 



In writing of this sparrow, Dr. Warren records 

 nests taken by Dr. Detwiler in Northampton County and 

 Professor Roddy in Perry County. Dr. Detwiler* s record 

 as is now known, was a fraud, and consequently practically 

 all his notes must be discounted. I have been unable to 

 get any further data on the Pery County nest, and it may 

 breed rarely in that county. Owing to its habits, it is 

 very easily overlooked or confused with the Grasshopper 

 Sparrow, and the present data would seem to show that it is 

 an extremely rare breeder and leaves Professor Roddy's nest 

 as unique. April 24, 1904, Mr. C. J. Hunt found six pairs 

 in a high, upland field, overgrown with grass and weeds, 

 near Cupola, Chester County, and secured a specimen there 

 on the 26th. E. Seymour Woodruff records one seen in Pike 

 Courjty near Milford, July 22, 1905. Prom the evidence at 

 hand, the Henslow's Sparrow may be looked for anywhere in the 



