8o The Ornithology of Chester County 



what local and not gregarious. Pennock states that 

 a nest with eggs was taken near Kennett Square in 

 1885; and Sharpies has found it every year in a 

 swamp at Eachus's mill, near West Chester; and 

 believes it is a summer resident. Migration records 

 from all available resources: 



Spring arrival Mar. 23 (1886) Apr. 30 

 (1905) ; ave. 9 yrs. Apr. 23. 



Spring departure May 9 (1891-1897) May 

 13 (1894); ave. 3 yrs. May 10. 



Fall arrival Oct. 5 (1890) Oct. 18 (1909); 

 ave. 3 yrs. Oct. 10. 



158. Passerella iliaca iliaca Fox Sparrow, "fox- 

 colored sparrow," "hedge sparrow." Tolerably 

 common transient ; occurs usually in small flocks. 



Berwyn : 



Spring arrival Feb. 22 (1888) Mar. 25 

 (1905); ave. 1 8 yrs. Mar. 13. 



Spring departure Mar. 9 (1890) Apr. 29 

 (1896) ; ave. 9 yrs. Apr. u. 



Fall arrival and departure Nov. 1-24. 



159. Pipilo erythrophthalmus Towhee, "che- 

 wink," "chip-cherry bird," "ground robin," "jo- 

 wink," "juwink," "to-wee," "thrush." Common 

 summer resident, occasional resident. Nesting data, 

 Berwyn, May 22. 



Berwyn: 



Arrival Mar. 29 (1904) Apr. 30 (1907), 

 ave. 29 yrs. Apr. 17. 



Common Apr. 5 (1902) May 5 (1901) ; ave. 

 26 yrs. Apr. 27. 



Bulk depart Sept. 27 (1893) Oct. 12 (1894) ; 



