362 BIRDS OF THE BRITISH ISLES. 



Common (5ulL 



uoH/y Du.vcAN 



The Common Gull {Lams amus^ Linnaeus) is one of our 

 resident gulls in the British Isles, but moves about a great 

 deal during the non-nesting season. It also occurs in the 

 Northern Palearctic Region. The adult in breeding dress 

 has the back, wings, and coverts, pearl-grey; secondaries, 

 broadly bordered and tipped with white ; primaries, mostly 

 black, with white spots or tips ; remainder of plumage, 

 pure white ; irides, hazel ; bill, yellow at tip ; base, 



