Annotated List 63 



mon summer resident, formerly common. Nesting 

 data: Parkesburg, May 20, 1885, collected by J. H. 

 Matlack (Sharpies MS.). The migration data for 

 spring arrival is from all available sources, and the 

 fall departure from my Berwyn notes: 



Arrival Apr. 25 (1900-1913) May 9 (1912) ; 

 ave. 12 yrs. May i. 



Departure Sept. 14 (1896) Oct. 19 (1887); 

 ave. 4 yrs. Sept. 29. 



108. Chordeiles viroinianus Nighthawk, "bird 

 hawk," "bullbat," "whipper-will." Tolerable com- 

 mon summer resident, rather local in character. 

 Breeding record: Paoli barrens, June 9, 1900, two 

 young (Bailey, Cass., v 22i). Migration records 

 from all sources: 



Arrival May 3 (1900) May 27 (1903) ; ave. 

 1 6 yrs. May 14. 



Depart. Sept. 16 (1890) Oct. 9 (1904) ; ave. 

 4 yrs. Sept. 23, 



109. Cltuetura pelagica Chimney Swift, "chimney 

 bat," "chimney bird," "chimney swallow," "chim- 

 ney sweep," "swallow." Common summer resident. 

 Nesting date: Berwyn, June I, 1914, five eggs, 

 collection of F. L. B. Berwyn migration records: 



Arrives Apr. 18 (1891) May i (1913); ave. 

 33 yrs. Apr. 25. 



Common Apr. 19 (1891) May 3 (1913); 

 ave. 28 yrs. Apr. 27. 



Bulk dep. Aug. n (1916) Oct. n (1900), 

 ave. 13 yrs. Sept. 15. 



Last Sept. 13 (1905) Oct. 18 (1902); ave. 

 19 yrs. Oct. i. 



