212 THE SCOTTISH NATURALIST 



The Lesser Black-backed Gull, Lams fiiscus. — A Lesser 

 Black-backed Gull is recorded from Corsemalzie on 17th February, 

 two from Luce Sands on 23rd February, one from the Butt of Lewis 

 on 12th March, and four from Corsemalzie on i6th March. On 

 2nd April one was seen at Bishop Loch, and numbers in Wemyss 

 Bay (Clyde) next day, and after this there are many records of the 

 return of our breeding L. f. britaufiicus. In autumn the species is 

 noted with some regularity up to 25th August, when it was last seen 

 at Galson ; last seen Lerwick on 25th September, 



The Glaucous Gull, Larus glaiicus. — Is recorded steadily 

 from our coasts and islands during January and February, and from 

 loth January to 4th February one was at the Kilmarnock 

 Waterworks, fourteen miles from the sea, and another in the same 

 neighbourhood on 5th February (3. viii. 243). Three were at 

 Pentland Skerries on 12th March, and single birds at Hoy High on 

 3rd, loth, and nth April. Glaucous Gulls are first noted at North 

 Unst on 4th September and Lerwick on 6th November. After this 

 small numbers are recorded constantly up to the end of the year. 



The Iceland Gull, Larus leucopterus. — Is recorded commonly 

 in small numbers from our Northern Isles and coasts up to loth 

 April. Two at Hoy High on 29th April, one there on ist May and 

 one at North Unst on 24th May. On 27th August an "immature 

 male approaching the white phase of plumage " was procured on 

 Lochfyne (i. 1915, 358), an Iceland Gull was at Whalsay Skerries 

 on 22nd September and three there on 15th November, after which 

 and to the end of the year there are again notes of small numbers 

 of these Gulls. 



The Kittiwake, Rissa tridactyla tridactyla. — On 30th January 

 Kittiwakes were numerous at the lochs at the Butt of Lewis but not 

 about the shores. Arrivals at breeding stations are recorded 

 between 9th March and 5th April, on 13th May scores were 

 passing north all afternoon at Whalsay Skerries, on 4th June a flock 

 of forty were flying, calling, over Soulseat Loch, and on 29th June 

 thousands of Kittiwakes were passing the Butt of Lewis at 7 a.m., 

 going east. Large flocks were again passing this station going east 

 all day on 28th October, "far more numerous than our local birds." 

 On 7th October an immature Kittiwake visited Melrose. 



The Great Skua, Stercorarius skua skua. — Is recorded from 

 North Unst on 8th April, Island of Noss on 13th May, and Whalsay 

 Skerries two days later. Last seen North Unst on 21st September 

 and Lerwick on nth October. 



