346 LARIDiE : JAEGERS, GULLS, TERNS, ETC. 



GLAUCOUS GULL, OR BURGOMASTER. 



Larus glaucus Briinn. 



Chars. Adult : general plumage white ; primaries entirely white, 

 or very pale pearly-blue, fading insensibly into white at some 

 distances from the ends, their shafts straw-yellow. Mantle 

 palest pearly-blue. Bill yellow with red spot on lower mandible ; 

 feet flesh-colored or pearl-yellowish. In winter : head and 

 hind neck lightly touched with gray. Young : impure white, 

 with or without traces of pearly-blue on the mantle ; head, neck, 

 and upper parts mottled with pale brownish, sometimes quite 

 dusky on the back, and under parts a nearly uniform but very 

 faint shade of the same ; quills and tail often imperfectly barred 

 with the same ; bill flesh-colored or yellowish, with black tip. 

 Very large; length about 30.00; extent, 60.00; wing, 18.00- 

 18.50 ; bill, 2.75-3.00 ; tarsi about 3.00. 



This magnificent Gull is the most boreal representa- 

 tive of the genus, uncommon even in Labrador, and very- 

 rare in New England, where it only occurs in winter. 

 It has been taken on Long Island, and in New York 

 State, but does not appear to have ever been observed 

 in Connecticut. Mr. H. Herrick gives it as a winter 

 resident at Grand Menan, and the name occurs in nearly 

 all the New England Lists, citation of which, however, 

 does not appear to be required. 



WHITE-WINGED GULL. 



Larus leucopterus Faber. 



Chars. Coloration precisely as in L. glaucus ; size less; length, 

 24.00 (rather less than more) ; wing, 16.00-17.00 ; bill, 1.75-2.00 ; 

 tarsus, 2.00-2.25. 



