THE BIEDS OF COEFWALL. 223 



Tern in its breeding haunts at Scilly, where it is now in the 

 minority ; generally arrives in May and leaves in October ; in 

 summer is completely circumpolar and has been found in the 

 highest latitudes reached ; migrates down the Atlantic sea-board 

 as far as Table Bay. 



Little Tern ; not an unusual visitor to the west in spring 

 and autumn, and occasionally seen in July ; thrice seen at Scilly ; 

 nests sparingly throughout Great Britain ; is abundant in sum- 

 mer south of the Baltic extending along the large rivers to the 

 Mediterranean; breeds also in North Africa and in the west 

 descends in winter to the Cape. 



[Sooty Tern ; an accidental visitor of which a single speci- 

 men was probably seen at Tresco, Scilly, in 1883; exceedingly 

 rare in Europe ; generally distributed during the breeding season 

 in the West Indies, Polynesia, throughout the Indian Ocean, and 

 in immense colonies on Ascension.] 



Sabine's Gull ; an accidental visitor from August to Decem- 

 ber, rare in Cornwall and in England generally ; has been 

 obtained at Looe, Falmouth, and from Penzance westwards ; last 

 specimens recorded in the county shot at Newlyn, Oct., 1891, and 

 at "Wolf Rock, Sept., 1894; an almost circumpolar bird breed- 

 ing in very high latitudes. 



Bonaparte's Gull ; an accidental visitor widely distributed 

 in summer over the Eur countries of North America ; of the six 

 records for the United Kingdom three are from west Cornwall, 

 namely, one in Falmouth Harbour and another at Penryn in Jan., 

 1865, and one near Newlyn in Oct., 1890; has not yet been 

 obtained on the continent. 



Little Gull ; a casual visitor from Falmouth westwards in 

 the autumn and winter ; last recorded birds from St. Just and 

 Hayle in 1889, and from Hayle in 1896 ; breeds abundantly roimd 

 Lake Ladoga and in the Ural Swamps ; in winter abundant, but 

 local in the Mediterranean Basin. 



Black-headed Gull ; a winter visitor, often in large flocks, 

 especially on the south coast ; observed on St. Grerman's river, 

 July 18tli, 1883; does not now breed in the county, though it 

 formerly did so at Scilly ; frequently occurs at Hayle in immense 

 numbers; in the fourth week in January, 1902, a small flock 



