56 The Ornithology of Chester County 



87. Pandion haliaettis carolinensis Osprey, "fish 

 hawk," "fish eagle," "eagle." Not uncommon trans- 

 ient, and of course local. There are rather indefin- 

 ate intimation of it having nested along the Brandy- 

 wine at one time; A. P. Lee listed it as breeding 

 within a few miles of Oxford (Warren, Bds. Pa., 

 1890, 143) ; and Dr. Montgomery noticed a pair 

 on several occasions during the summer of 1888, 

 along the former stream in East Bradford Twp. 

 However, this species has been known to travel quite 

 a distance in search of food and its mere presence 

 may often be misinterpreted. I have endeavored to 

 give both the spring and fall arrivals and departures 

 at Berwyn vicinity: 



Arrives — Apr. 5 (1908) — Apr. 21 (1893-1903),' 

 ave. 5 yrs. Apr. i.\. 



Departs — ^Apr. 29 (1913) — May 15 (1901); 

 ave. 5 yrs. May 7. 



Arrives — Aug. 13 (1912) — Sept. 8 (1905) ; ave. 

 5 yrs. Aug. 21. 



Departs — Sept. 27 (1895) — Nov. 13 (1915)? 

 ave. 4 yrs., Oct. 16. 



88. Aluco pratincola Barn Owl, "monkey-faced 

 owl," "southern barn owl," "white owl." Fairly 

 common resident, formerly considered quite rare. 

 The eastern part of the county the past twenty-five 

 years, seems to have received an increasingly large 

 number via the small creek valleys of the Delaware ; 

 becoming first numerous in Easttown, Willistown 

 and East Goshen townships, until now it is pretty 

 well distributed over the county. It nests usually 

 in large isolated trees. Breeding date : East Goshen 



