North American Birds Eggs. 

 45. Kumlien Gull. Larus kumUeni. 



29 



Range. — North Atlantic coast, breeding in Cumberland Sound and wintering 

 as far south as Long Island 



This bird differs from the Glaucus-winged only in the jiattern of the gray 

 markings of tlie primaries and in having a little lighter mantle. It is quite 

 common in its breeding haunts where it places its nest high up on the ledges of 

 the cliffs. The eggs are not different apparently from glntii-CKceiis. 



46. Nelson Gull. Laru-i iielsoiii. 



Range.— Coast of Alaska. 



Plumage exactly like that of Kumlien Gull and questionably a new species. 

 The nests and eggs are not to be distinguished from the preceding. 



47. Great Black-backed Gull. Lanis marivufi. 



/'. 



Range.— North Atlantic on both the American and European sides ; breeds 

 from Nova Scotia northward and winters south to the Great Lakes and the 

 Middle States. 



The largest of the Gulls (thirty inches longi and unlike any other. The 

 mantle is dark slaty black, and tlie primaries are Ijlack with white tips. The 



bill is very large and 

 powerful and quite 

 strongly hooked. They 

 are quite abundant 

 birds in their range, 

 and are very quarrel- 

 s<jme, both among 

 themselves and other 

 species. They do not 

 breed in as large 

 colonies as do the 

 other Gulls, half a 

 dozen pairs apprfi- 

 priating a small island 

 to the exclusion of all 

 other birds. They are 

 very rapacious birds 

 and live to a great 

 extent, especially dur- 

 ing the breeding sea- 

 son, upon the 

 eggs and young 

 of other birds such as 

 Ducks, Murres and smaller Gulls. They place their nests upon tire higher 

 portions of sandy islands. They are made of grasses and seaweed. The three 

 eggs are laid early in June ; they are grayish or brownish, spotted with lirown 

 and lilac. Size 3x2.15. Data. — South Labrador, June 21, 1S84. Three eggs. 

 Nest on a small island off the coast ; of grasses and moss. 





(Urayish huff . I 



