138 THE SCOTTISH NATURALIST 



The Sandwich Tern, Sterna sandvicensis sandvicensis. Is 

 first reported from Luce Bay on 22nd April, Largo Bay on 5th May, 

 and Noss Head on 14th May. Last seen Noss Head on 28th 

 August, and Largo Bay on i6th September. 



The Common Tern, Sterna himndo. Is noted at Aberlady on 

 4th May, and Harelaw Dam, Neilston, Tay Estuary, Luce Bay, 

 and Largo Bay next day. Further arrivals are recorded up to 26th 

 May. Autumn movement had begun by nth August, last seen 

 Tay Estuary on 21st September, and off the Isle of Whithorn on 

 29th September. 



The Arctic Tern, Sterna paradiscca. \% first recorded at 

 Noss Head and Craigmore (Bute) on nth May, Lerwick and 

 Vallay on 17th May, and arrivals at breeding stations are noted up 

 to 25th May. Most had left Whalsay Skerries by 12th August, 

 last seen Noss Head on 28th August, Westray on ist September, 

 and Lerwick two days later. 



The Little Tern, Sterna albifrons albifrons. -Arrived at 

 Vallay (O.H.) on 17th May. 



The Black-headed Gull, Lams ridibundus. Arrivals at 

 breeding-places are noted from 23rd March to 15th April, and some 

 were on the Isle of May on 19th and 23rd May. By 19th June 

 flocking and return to the shore are recorded from several stations. 



The Common Gull, Larus canus canus. Was arriving at its 

 nesting-places by 21st March, though adults were seen in the Tay 

 Estuary up to 12 th May. 



The Lesser Black-backed Gull, Larus fuscus. A bird of 

 this species (subsp?) is recorded from the Tay Estuary on i6th 

 February. What were undoubtedly arrivals of our L. f. ajjinis are 

 reported from Glasgow harbour on loth March, and from various 

 other stations up to 19th April, while on 30th April two L. f. affinis 

 and one L. f. fuscus were noted in the Tay Estuary. 



The Glaucous Gull, Larus hyperboreus. Some frequented 

 Lerwick in January and records come from North Unst on 22nd 

 September, Lerwick on 13th October, and North Ronaldshay on 

 23rd November. 



The Iceland Gull, Larus kucopterus. Single birds are noted 

 at Reay, Caithness, on 4th January, Noss Flead and Lerwick on 

 1 2th January, Noss Head on 12th September, 28th October, 9th 



