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BIRDS OF THE BRITISH ISLES. 



Sabine's (BulL 



Sabine's Gull {Xema Sabini, J. Sabine) is a rare nomadic 

 autumn migrant to the British Isles, and inhabits the 

 Northern Nearctic and Palearctic Regions. The adult in 

 summer has the head and nape dark slate ; a narrow black 

 collar round the neck ; mantle, scapulars, and most of 

 wing-coverts, slate-grey ; primaries, black, with white on 

 the outer half of the inner webs, and tipped with white ; 

 tail, white, and forked ; rest of plumage, white ; irides, 

 dark hazel ; bill, black at base ; bright red at tip ; legs 

 and feet, slaty-black. Length, about fourteen or fifteen 

 inches. The young in first plumage are more or less 

 greyish, white, and black ; tail, tipped with black. 



