72 The Ornithology of Chester County 



individual in his West Chester-Coatesville Christ- 

 mas census, 1901-02-03 (Bd. Lore). 



Spring arrival Feb. 16 (1909) Mar. 19 

 (1905) ; ave. 9 yrs. Mar. 5. 



Fall arrival Oct. 24 (1915) Nov. 22 (1896) ; 

 ave. 3 yrs. Nov. 8. 



133. Quiscalus quiscula, quiscula* 3 Purple Grack- 

 le, "blackbird," "crow blackbird." Abundant summer 

 resident; not rare resident in mild winters. Gre- 

 garious, nesting in colonies and gathering in im- 

 mense numbers previous to the autumnal flight. 

 Nidification begins Apr. 15; average date for com- 

 plete set, Apr. 26. Berwyn data on the migration 

 of this bird is unusually complete. 



Arrival Jan 7 (1890) Mar. 16 (1885); ave. 

 33 yrs. Feb. 27. 



Bulk arriv. Feb. 13 (1890) Mar. 27 (1885) ; 

 ave. 32 yrs. Mar. 9. 



Bulk depart. Sept. 24 (1891) Nov. n 

 (1889) ; ave. 25 yrs. Oct. 20. 



Last seen Oct. 6 (1887) Dec. 24 (1889); 

 ave. 32 yrs. Nov. 5. 



134. Quiscalus quiscala teneus Bronzed Crackle. 

 Straggler. Dr. Montgomery took a specimen in 

 East Bradford, Apr. 30, 1889, and Dr. Chapman 

 found one closely approaching this form in a series 

 of skins taken in the breeding season in Chester 

 county by Dr. B. H. Warren and G. W. Roberts. 



135. Pinicola enucleator leucura Pine Grosbeak. 

 Rare winter visitant; occurs only in the most severe 

 weather. Listed by Michener, Warren and Pen- 

 nock. 



