BIRDS OF THE HUMBER DISTRICT. 193 



island of Sylt, off the coast of Denmark. I can find 

 no notice of its having done so recently. 



249. STERNA CANTIACA, Gmelin. Sandwich Tern. 



Provincial. Great Sea-Swallow. 



Not uncommon off the Yorkshire and Lincolnshire 

 coasts in the autumn, when flocks appear on their 

 passage southward. I have seen it at this period at 

 Spurn, in company with the Arctic and common 

 species. 



These Terns breed in considerable numbers on the 

 Farn Islands, also on Coquet Island, off the North- 

 umberland coast*. They make no nest, but deposit 

 their two eggs in a slight hollow on the ground. 



The Sandwich Tern is the first to move southward 

 along the coast in the autumn, which they do in 

 large flocks, both old and young together, about 

 the middle of August, preceding both the Arctic and 

 Common Terns in their autumn migration. This 

 species, I have found, feeds much on the common 

 sand-launce. 



250. STERNA DOUGALLI i, Montagu. Roseate Tern. 

 I am aware of no recent occurrence of this beautifu 



and chastely coloured Tern on our coasts. A few 



* They also nested not many years since on some rocky islets 

 near the Bass Rock off the mouth off the Firth of Forth ; but 

 Mr. R. Gray, in his ' Birds of the West of Scotland,' says that 

 they have now quite deserted this place. 



