NOTES ON SHETLAND BIBDS. 77 



Red-throated Diver (Colymbus septentrionalis) . — A pair on 

 a small loch near Walls, 21st May. We afterwards probably saw 

 one of the same birds, flying overhead with outstretched neck, 

 and uttering its strange unearthly cry. These were the only 

 Divers seen, except a single bird on the sea near Yell, which 

 was perhaps C. glacialis. 



Storm Petrel (Procellaria pelagica). — Their nesting-holes 

 were shown on an island near Scalloway. We saw also some 

 eggs taken in 1897 at Brindister. 



Manx Shearwater (Pvffinus anglorum). — We saw, on Foula, 

 an unblown egg which had been taken on 18th May. 



Fulmar (Fulmarus glacialis). — Multitudes on certain parts of 

 the Foula cliffs, as at the Kaim and Smalie. They had just 

 begun to lay ; we saw an unblown egg taken about 25th May. 

 The increase of this species, which established itself on Foula 

 some time between 1870 and 1880, is very remarkable. 



