of the Island, of Ran say. 511 



Lesser Black- backed Gui»l. Larus fuscus. 



Numbers breed about half a mile away from the aforesaid 

 colony of Herring-Gulls, but none remain during the winter. 

 In June 1897 I took two eggs of a pale blue colour, which 

 are now, I believe, at Cambridge. 



Common Gull. Larus canus. 



Scattered nests are found all round the coast, but in small 

 numbers. 



Greater Black-backed Gull. Larus marinus. 



Only one nesting-place on the island. This species makes 

 great havoc amongst the eggs and young of other birds. 

 Many immature examples are resident during the whole 

 year. 



Black-headed Gull. Larus ridibundus. 



Fairly common in early summer, but does not breed here. 



Richardson's Skua. Stercorarius crepidatus. 

 Often seen in the autumn chasing the Herring and Com- 

 mon Gulls to make them disgorge their prey. 



Storm-Petrel. Procellaria pelagica. 



Common after heavy gales from the north, but does not 

 breed here. 



Manx Shearwater. Puffinus anglorum. 

 Observed generally in both spring and summer, but not a 

 resident. 



Great Northern Diver. Col y ml us glacialis. 



Immature birds are very common during the winter 

 months, and on a foggy day or night their wild complaining 

 cries may be heard at a great distance. Mature and 

 immature birds again appear in the late spring and assemble 

 in small numbers, four to eight together, May loth being 

 the latest date on which I have noticed them ; they collect 

 apparently before migrating to their breeding-haunts. None 

 are seen again until the middle of August. 



Black-throated Diver. Colymbus arcticus. 



I have on several occasions seen this bird, as well as the 



