210 BIRDS OF GUERNSEY. 



fully two inches and a half, which is considerably 

 more than that of a fully adult bird I have from 

 Lundy Island. The Great Black-backed Gull is 

 sufficiently common and well known to have a local 

 name in Guernsey-French (Hublot or Ublat), for 

 which see ' Metivier's Dictionary.' 



Professor Ansted includes the Great Black- 

 backed Gull in his list, and marks it as only 

 occurring in Guernsey and Sark. There are three 

 specimens in the Museum an adult bird, a young 

 one, and a young one in down, with the feathers 

 just beginning to show. In the young bird the 

 head and neck were mottled and much like those 

 of a young Herring Gull in the same state ; the 

 back, thighs, and under parts do not appear so 

 much spotted as in the young Herring Gull ; the 

 feathers on the scapulars and wing-coverts were 

 just beginning to show two shades of brown, as in 

 the more mature state ; the same may be said of 

 the primary quills, which were also just beginning 

 to make their appearance ; the tail, which was only 

 just beginning to show, was nearly black, margined 

 with white. 



171. BROWN-HEADED GULL. Larus ridibundus, 



Linnseus. French, " Mouette rieuse."* This 



pretty little Gull is a common autumn and winter 



visitant to all the Islands, remaining on to the 



* See Temminck's ' Man. d'Ornitliologie.' 



