192 BIRDS OF GUERNSEY. 



when I left the Islands at the end of July ; at least, 

 I saw none about, though there were several adults 

 about both Grand Havre and L'Ancresse Bay. The 

 same remark applies to Herm, where my last visit 

 to the shell-beach was on the 22nd of July, when I 

 saw several adult Common Terns about, but no 

 young ones with them ; all these were probably 

 birds which had been robbed of one or more 

 clutches of eggs. 



Professor Ansted includes the Common Tern in 

 his list, but only marks it as occurring in Guernsey. 

 There is one specimen in the Museum, a young 

 bird of the year. 



164. ARCTIC TERN. Sterna macrura, Naumann. 

 French, " Hirondelle de mer arctique."* The 

 Arctic Tern is by no means so common in the 

 Islands as the Common Tern, and is, as far as I 

 can make out, only an occasional autumnal visitant, 

 and then young birds of the year most frequently 

 occur, as I have never seen a Guernsey specimen of 

 an adult bird. I do not think it ever visits the 

 Islands during the spring migration ; I did not see 

 one about the Vale in the summer of 1878, nor did 

 Mr. Howard Saunders and myself recognise one 

 when we visited the rocks to the north of Herm. 

 It may, however, have occurred more frequently 

 than is supposed, and been mistaken for the 



* See Temmiuck, ' Man. d'Ornitliologie.' 



