^ °1908^^] Allen, Kumlien's Gull near Boston. 299 



observers, have kindly furnished me with their notes on these 

 species for publication in connection with my own. 



The first of our records is of an immature Glaucous Gull at T 

 Wharf, Boston Harbor, seen by me, February 16 and 23, and bj 

 Dr. Townsend, February 20, 1905. This may have been the 

 same bird as that recorded by Mr. Brewster (Birds of the Cam- 

 bridge Region, p. 92) as having been seen by ISIr. Glover M. Allen 

 off Harvard Bridge, January 20 of that year. Another immature 

 bird of this species was seen by Dr. Townsend at Nahant Beach, 

 January 7, 1906, and still another by the same observer at Ipswich, 

 ]\Iay 26, 1907. Of the Iceland Gulls (Larus leucopterus) , Dr. 

 Townsend observed one in the Charles River Basin, February 1, 



1906, one in immature plumage in Boston Harbor, February 17, 



1907, and another, or perhaps the same, young bird in the Basin, 

 March 13. The Harbor bird was seen by me, February 16, at 

 T Wharf. I heard its note once or twice, — practically identical, 

 as it then seemed to me, with the familiar creak of the Herring Gull. 



In January, February, and March of this year a company of 

 white-winged gulls, varying in number and composition, was con- 

 tinually seen in a flock of Herring Gulls which frequented King's 

 and Fisherman's Beaches at Swampscott, Mass. These birds 

 were first found January 7 by jNIr. Wright, who visited them also 

 on January 13 and 21, February 11, and March 13. On February 

 22, Dr. Townsend and I saw them, and I observed them also 

 February 29 and March 7. Unfortunately, it was never possible 

 to identify positively every bird in this company, which varied in 

 number from four to seven. Certain individuals, however, were 

 determined beyond the possibility of error. At least two immature 

 Glaucous Gulls were identified, and at least three immature Iceland 

 Gulls. On January 13 Mr. Wright saw two Glaucous Gulls in the 

 pure M^hite plumage there. On the occasion of the visit of Dr. 

 Townsend and myself, February 22, a single adult Glaucous Gull 

 was included in the flock. This was the only adult bird belonging 

 to either species which was noted in this flock, and it was seen but 

 this once. The presence of this bird on this single occasion and 

 that of the two Kumlien's Gulls in the same flock on March 7, and 

 one of that species on March 13, indicate that the make-up of the 

 flock was constantly changing, though doubtless certain individuals 

 remained in the locality most of the time. 



