SUPPLEMENT TO BIRDS OF ESSEX COUNTY 1 59 



271 [636] Mniotilta varia (Linn.). 



Black and White Warbler. 



Very common summer resident. April 24 to September 25 (November 11) ; 

 average date of arrival for seven years, May 3. 



Eggs: May 17 to June 18. 



As this warbler does not breed in the Ipswich dunes, the presence of two 

 there on August 4, 1910, probably indicated migration. 



The November 11 record was of a bird seen at Flax Pond, Lynn, in 1914, by 

 Mr. A. P. Stubbs. 



*272 [637]Protonotaria citrea (Bodd.). 



Prothonotary Warbler. 

 Accidental visitor from the South. 



An individual of this species, new to the list, was seen near the Pine Swamp 

 Road, Ipswich, on September 13, 1913, by Dr. W. M. Tyler. 



A female Prothonotary Warbler was picked up dead after it had killed itself 

 on one of the windows of the Beverly High School on May 26, 1914. It was 

 given by Miss Viola E. Crittenden to Mr. C. J. Maynard. 



273 [639] Helmitheros vermivorus (Gmel.). 



Worm-eating Warbler. 

 Accidental visitor from the South. 

 The 1902 record remains unique. 



*274 [641] Vermivora pinus (Linn.). 



Blue-winged Warbler. 

 Accidental visitor from the South. 



I am fortunate in being able to add this warbler to the list. A single bird 

 was watched by Miss E. D. Boardman on September i, 1913, and again on Sep- 

 tember 15, bathing and on the ground in front of her bird-bath at Manchester. 

 The bird-bath is forty feet from the window of her house from which she 

 watched. 



