GULLS 



(42) Larus hyperboreus Gunn. 



(Lat., a gull; Lat., northern). 



GLAUCOUS GULL; BURGO- 

 MASTER. Ad. in summer — White, 

 with a very pale pearl mantle. Bill 

 yellow, with spot of red in angle of 

 lower mandible. Iris yellow. Feet 

 flesh-color. In winter — With a wash 

 of brownish on the head. Im. — 

 Bill flesh-color, with a black tip. 

 Plumage white, lightly spotted and 

 barred with pale brown. L., 30.00; 

 Ex., 60.00; W., 17.50; T., 8.00; Tar., 

 2.60; B., 2.35. Nest — A bulky 

 structure of grass, seaweed and moss 

 on the ground. Two or three brown- 

 ish-gray eggs with black and brown 

 markings, 3.00 x 2.20. 



Range — Breeds from Ungava, 

 Mackenzie and the Aleutian Islands 

 northward. Winters south to Long 

 Island and the Great Lakes. 



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readily be recognized by the solid black tips to the primaries 

 and by the combination of a yellow bill with black feet. 

 They live upon animal matter found floating on the water 

 or upon small fish, schools of which often swim close to 

 the surface. 



GLAUCOUS GULLS are among the largest and most 

 powerful of the family. Their bills are large and quite 

 hooked, capable of and executing great destruction of 

 eggs and young of other sea-birds. They are hghter colored 

 than any others of the large gulls; even the primaries are 



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