Annotated List 103 
May 14 (1914) ; ave. 6 zecords 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 
(1917); ave. 11 records 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 
, 26 cand) 27,- 1907.0 Wis.” 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 1 
