ANNOTATED LIST OF THE BIRDS 69 



Indeed it is more than likely that many individuals are un- 

 detected. The two species have similar plumages, but there 

 is never any black in the primaries, which readily dis- 

 tinguishes them from other Gulls. The immature plumage 

 has a pale cream-colored appearance in life, very different 

 from the dirty grayish brown of the immature Herring Gull. 

 In the second year they are pure white. The adult plumage 

 with a pale gray mantle is rarely seen. To distinguish the two 

 species is not particularly difficult. The Glaucous Gull is 

 usually larger than a Herring Gull, and is always more 

 stockily and heavily built. The Iceland is the same size as 

 the Herring or a little smaller, and always has a much slen- 

 derer bill than the Glaucous Gull, a difference which is almost 

 as striking as the difference in the bills of the Hairy and 

 Downy Woodpeckers, and when once learned and observed 

 becomes a reliable diagnostic character. 



Uncommon but regular winter visitant to the coast of 

 Long Island and New York Harbor, rarely seen much before 

 Christmas, but lingering into May. Rare in Long Island 

 Sound. Casual at Ossining, January 19, 1889. 



Long Island. Uncommon winter visitant, always in increased 

 numbers in severe winters; November 2 to May 26. 



ORIENT. Rare winter visitant, November 2, 1920 to 

 March 29, 1908. Average arrival November 25. 



LONG BEACH. Observed almost every winter; November 

 16, 1919 (LaDow and Rogers) to May 26, 1921 (E. P. Bick- 

 nell and L. N. Nichols) and June 6, 1921 (Bicknell). 



ICELAND GULL (Larus leucopterus) 



Less common than the Glaucous Gull, but probably 

 reaches Long Island annually. Numerous observations in the 

 last five years from Long Island and the lower Hudson Valley. 

 There was a marked flight the winter of 1921-22. 



Long Island. Rare winter visitant, November 10 to May 28, 

 1922, Jones Beach (Crosby, Griscom, Janvrin, Johnson). Only two 

 records for Long Island Sound, Miller's Place, November 30, 1888, 

 and winter of 1893 (A. H. Helme). 



