64 The Ornithology of Chester County 



no. Archilochus colubris Ruby-throated Hum- 

 mingbird, "hummingbird." Tolerable common 

 summer resident. Nest and two eggs, Benvyn, June 

 10, 1899. Also Berwyn migration data: 



Arrives May n (1886) May 22 (1917); 

 ave. 17 yrs. May 15. 



Departs Aug. 24 (1913) Oct. 9 (1887) ; ave. 

 17 yrs. Sept. 5. 



in. Tyrannus tyranus Kingbird, "beebird," 

 "kingbird," "tweet," "tyrant flycatcher." Tolerable 

 common summer resident. My Berwyn migration 

 data may average a few days later than that of the 

 southern parts of the county. 



Arrival Apr. 20 (1895) May 20 (1917); 

 ave. 1 8 yrs. May 5. 



Common Apr. 25 (1895) May 27 (1917); 

 ave. 10 yrs. May 10. 



Departure Aug. 24 (1905) Sept. 10 (1904); 

 ave. ii yrs. Sept. 2. 



112. Myiarchus crinitus Crested Flycatcher, "fly- 

 catcher," "great-crest," "snake bird." Common 

 summer resident. Nesting data: Berwyn, June 4, 

 1893, five eggs. 



Berwyn : 



Arrival Apr. 17 (1913) May 8 (1909) ; ave. 

 26 yrs. May I. 



Common Apr. 19 (1894) May 19 (1913); 

 ave. 22 yrs. May 9. 



Departure Aug. 29 (1902) Oct. 7 (1895- 

 1897) J ave. 13 yrs. Sept. 15. 



113. Sayornis phcebe Phoebe, "beambird," 

 "bridgebird," "phcebebird," "pewee," "pewit." 



