68 BIRDS OF THE NEW YORK CITY REGION 



IVORY GULL (Pagophila alba) 



An accidental visitant from the arctic. One record, 

 Sayville, Long Island, January 5, 1893. Mr. A. H. Helme 

 has written "that he once saw a bird of this species flying 

 about Mt. Sinai harbor." (Eaton, Birds of New York.) 



KITTIWAKE (Rissa tridactyla) 



The Kittiwake is our most pelagic Gull, and is infre- 

 quently seen from the shore. It is, however, an abundant 

 migrant and common winter visitant off-shore from the 

 middle of November to March. There are no records or 

 reliable observations away from the coast. Inexperienced 

 observers think they see this little Gull more often than they 

 do. It is larger than the Bonaparte's, but smaller than the 

 Ring-billed Gull, with a more graceful flight and more rapid 

 wing-beats. It always has black legs. The immature bird 

 resembles Bonaparte's Gull in the same plumage, but has a 

 dark bar on the back of the neck instead of a dark spot back 

 of the eye. The adult should be identified with great caution 

 on our beaches. 



Long Island. Common winter visitant, mostly off-shore, 

 November 4 to March 21. An exceptionally early arrival October 

 13, 1912. 



ORIENT. Rare, irregular winter visitant, November 23, 

 1907 to February 28, 1912. 



LONG BEACH. Rare and irregular in fall, winter, and 

 spring. October 13 and 27, 1912 (Griscom); November 6, 

 1917 (Bicknell) to March 12, 1911 (Griscom) and March 17, 

 1921 (Bicknell). 



GLAUCOUS GULL (Larus hyperboreus) 

 With the steady increase of Herring and Black-backed 

 Gulls in recent years the Glaucous and Iceland Gulls have 

 become regular winter visitors, and are observed annually 

 among the countless thousands of the other species which 

 throng New York Harbor and the neighboring beaches. 



