224 THE Birds of Cornwall. 



could be seen daily from Boscawen Bridge, Truro ; still breeds 

 in Dorsetshire and throughout the continent from South Norway 

 to the Mediterranean ; in winter common on the Eed Sea and in 

 Nubia. 



Common Gull; a winter visitor but not at all plentiful; 

 arrives in August and leaves about the middle of April ; has 

 occurred all round our coast, and for the last two years has been 

 a frequent visitor at Nance, where it was seen this year (1902) as 

 late as the 29th of April ; very rare at Scilly ; nests abundantly 

 on the coasts and moorland Lochs of Scotland and on the 

 continent up to the North Cape ; in winter common in the Medi- 

 terranean Basin. 



Herring Gull ; resident, breeding on most of the inaccessible 

 cliffs round our coasts and at Scilly, and very common through- 

 out the year ; breeds abundantly along the northern half of the 

 western coast-line of Europe. 



Lesser Black-backed Gull ; resident and occasionally very 

 common in winter and early spring ; breeds in great numbers at 

 Scilly, commonly on MuUion Island, on Grull Eock, Falmouth, 

 and possibly in scattered pairs on the western mainland ; eggs 

 taken at Perranporth, in June, 1899 ; numerous in summer in 

 the north of England, Scotland, and the Faeroes, as well as 

 on the coast of Norway. 



Great Black-backed Gull; resident at Scilly, where it 

 breeds regularly ; for the most part a winter visitor singly or in 

 pairs, commoner on the north coast than on the south ; breeds 

 annually at Perranporth ; resident in Iceland and the Faeroes, 

 but probably does not nest on the continent except in north-west 

 France ; as far south as the Canaries. 



Glaucous Gull ; a casual visitor from January to March in 

 small numbers and at very irregular intervals ; last record for the 

 county, Dec, 1891 ; a common resident in Iceland, and breeds 

 throughout the entire circumpolar regions ; in winter migrates to 

 the Mediterranean. 



Iceland Gull ; a casual visitor in winter, most frequently 

 seen from December to February, but twice in April ; formerly 

 very rare, but not unfrequent between Truro and Penzance since 

 1895; appeared in large numbers in 1873, in the winter of 



