Annotated List 103 



May 14 (1914) ; ave. 6 records May 12. 



219. Wilsonia pusilla pusilla Wilson's Warbler. 

 Tolerably common transient. I took a female with 

 black cap on May 18, 1896, at Berwyn (No. 596, 

 coll. F. L. B. ) . There are no fall records avail- 

 able. 



Spring arrival — May 8 (1909) — May 20 

 (19 1 7); ave. II record? May 13. 



Spring departure — May 16 (1902-1905) — 

 May 30 (1907) ; ave. 12 yrs. May 19. 



220. Wilsonia canadensis Canada Warbler. Tol- 

 erably common transient. 



Berwyn : 



Spring arrival — May 9 (1909) — May 22 

 (1917), ave. 9 yrs. May 16. 



Spring departure — May 16 (1896) — May 30 

 {1907-1917); ave. 6 yrs. May 22. 



Fall arrival — Aug. 13 (1891) — Aug. 26 (1898) ; 

 ave. 2 yrs. Aug. 19. 



Fall Departure — Aug. 31 (1891) — Sept. 8 

 (1898) ; ave. 2 yrs. Sept. 4. 



221. Setophaga ruticilla Redstart. Common, 

 sometimes abundant, transient, and rare summer 

 resident. Dr. Warren thinks it probably breeds. 

 I found it present and in song at Berwyn on June 

 9, 16 and 27, 1907 (Wils. Bull., 61, 163), also 

 June 8, 1915, and while it probably bred, no nests 

 or young were found. 



Berwyn : 



Spring arrival — Apr. 27 (1911-1913) — May 8 

 {1895) ; ave. 13 yrs. May 4. 



Spring departure — May 11 (1895) — June i 



