REPORT ON SCOTTISH ORNITHOLOGY IN 1918 139 



November, 2nd and 3rd December off Scapa Flow (?. xii. 190 and 

 xiii. 62), and Galson on 4th December. 



The Ivory Gull, Pagophila eburnea. See p. 102. 



The Great Skua, Stercorarius skua skua. Arrivals are 

 recorded from North Unst on ist April and Foula on 7th April; 

 last seen at North Unst on 19th September. 



The Arctic Skua, Stercorarius parasiticus. Arrived at Foula 

 on 26th April, and one was seen at Noss Head on i6th May. Two 

 at Port Errol (Aberdeenshire) on 7th September (i. 1918, 274), 

 three offTentsmuir Point on 21st September, and one off the Isle 

 of Whithorn on 29th September. 



The Razorbill, Alca torda. Many were found dead at Aber- 

 lady after a gale from the north on 24th January, and some had 

 returned to the Isle of May by ist April ; left their breeding cliffs 

 during the second week of August. 



The Guillemot, Uria troille troille. Many found dead with 

 Razorbills at Aberlady on 24th January, and returns to the Isle of 

 May are noted about mid-March, while up to 7th May "individuals 

 and pairs all in winter plumage" were seen in the Tay Estuary. 

 Leaving their breeding cliffs at the same time as the Razorbills, and 

 on 5th October a Guillemot was found near Carstairs Junction 

 (i. 1919, 28). 



The Little Auk, Alle alle. From 20th January to 3rd 

 February there are a good many records of Little Auks about 

 Largo, and on 24th January after a northerly gale many were found 

 dead at Aberlady. On 24th March one was found newly dead in 

 Largo Bay. 



The Puffin, Fratercula arctica arctica. Arrivals are noted 

 from the Isle of May on ist April, and Whalsay Skerries on 26th 

 April. The Puffins left the cliffs at Noss Head on 13th August, 

 North Unst and Whalsay Skerries on 20th August. 



The Corncrake, Crex crex. First recorded from Tarholm 

 (Ayr) on 19th April, Netherlee (Cathcart) on 25th April, Clarkston 

 and Neilston next day. After this the spread was rapid, and 

 arrivals are recorded steadily up to 20th May from mainland and 

 island stations alike. Last seen Beith on nth August, while a 

 belated straggler was shot at Possil Marsh on 13th November. 



