Annotated List 51 



noticed as early as Aug. 22 (1878) in East Brad- 

 ford Twp. Below are the averages from all sources : 



Aug. 22 (1878) Nov. 5 (1879); ave. 4 yrs. 

 Sept. 14. 



Mar. 23 (1914) Apr. 20 (1891); ave. 4 yrs. 

 Apr. 7. 



75. Accipiter velox Sharp-shinned Hawk, "arrow 

 hawk," "bird hawk," "little chicken hawk," "little 

 hawk," "partridge hawk," "sharp-shin," "sparrow 

 hawk." Tolerable common transient and rare, 

 though regular, summer resident. Barnard, Mich- 

 ener and Warren considered it as a resident, and 

 it almost comes under this head since there are 

 records for every month with the exception of Jan- 

 uary. Matlack, Warren and Jackson have found 

 it nesting near West Chester; one or two nests 

 have been taken by Hughes, and Rotzell secured a 

 set of four eggs from a cedar grove near Berwyn, 

 May 23, 1889 (OoL x, 300) on which occasion 

 the writer was present. This set is now in the 

 Philadelphia Academy of Natural Sciences. On 

 account of the presence of individuals in early and 

 late winter, no migration averages can be given, but 

 a perceptible autumnal movement occurs from Sept. 

 10 to Oct. 1 6. 



76. Accipiter cooperi Cooper's Hawk, "bird 

 hawk," "blue hawk," "chicken hawk," "little hen 

 hawk," "long-tailed hawk," "partridge hawk," 

 "pigeon hawk," "pheasant hawk," "privateer." 



Common summer, occasional resident. Nidifica- 

 tion commences about Apr. 20 in the vicinity of 

 Berwyn, and the average date for the complete set 



