No. 20.] THE BIRDS OF CONNECTICUT. I49 



Vermivora pinus (Linnaeus). Blue-winged Warbler. 



An abundant summer resident of southern Connecticut from 

 early May until August, outnumbering any other warbler with 

 the possible exception of the Oven-bird; rarer farther north, 

 though breeding at Portland and at Lake Waramaug in Litch- 

 field County. 



Earliest record. New Haven, May 2, 1899, April 30, 1908 

 (C. H. P.) ; Portland, May 2, 1902. 



Latest record. New Haven, Sept. 16, 1904; Portland, Aug. 

 27, 19 10. 



Nest. Usually at the base of some small plant, often a golden- 

 rod, where woods and meadow join, but also frequently in a 

 small glade in the woods or smaller opening in brush land. 



Eggs. 4-6; the last of May. 



Nesting dates. Earliest record. May 20, 1896, five eggs 

 (H. W. F.). Latest record. June 16, 1899, four eggs 

 (J. C. A. M.). 



Occurrence. From Bridgeport to New Haven the Blue- 

 winged Warbler is a very abundant summer resident, Dr. Eames 

 having seen at Bridgeport fully sixty males in song on May 9, 

 1889; but east of Branford it becomes rare, and has been seldom 

 noticed by L. B. B. at Stony Creek or Guilford. At the mouth 

 of the Connecticut they are again abundant. In the interior of 

 the state they are likewise rather rare except in the spring migra- 

 tion, J. H. S. having noted its occurrence only once after June 

 13 (Aug. 27, 1910), and having observed only three nests; 

 and E. S. W. having noted it only four times in Litchfield. At 

 Danbury a male was taken April 27, 1908 (J. C. A. M.) ; and 

 it has been seen in Kent in August, 1907 (G. E. Hix), at Lake 

 Waramaug, June 10, 1900, and in Washington, May 30, 1907 

 (L. B. B.). 



This species was found interbreeding with V. chrysoptera, 

 at Portland, June 13, 1889,^ and a male said to be mate of a 

 female V. chrysoptera was taken with it in Woodbridge, May 

 23, 1898 (A. H. v., in coll. of L. B. B.). 



Males showing an approach to V. lawrencei in having much 

 black on lores and auriculars or one or two black feathers on 



'Auk, Ti, 3, p. 279. 



