SULE SKKRKY AND ITS BIRD-VISITORS 293 



passage, when its visits have been from 24th March to 

 24th May. There are also records of appearances on 

 28th December, during snow, and on 24th February. 



TuRDUS TORQUATUS, Ring-OtLzel.—Occuxs on both 

 the spring and autumn migrations, but is not recorded 

 for all years. It has passed north in spring from 12th 

 April to 1 6th May, and on its return passage from 

 9th September to i6th October, when it has sometimes 

 occurred in considerable numbers. 



Erithacus rubecula, Redbreast. — A few appear in 

 autumn, but the records are scanty, and relate to visits 

 paid from 13th September to 28th October. 



Saxicola cenanthe, Wheatear. — Regular and 

 abundant as a visitor during passage. Appears in 

 spring from 10th April to nth May; and in autumn 

 from 6th August to 6th October. Some of the 

 numerous visitors, no doubt, belong to the large north- 

 western race, Saxicola cenanthe leucorrhoa. 



RuTiciLLA phcenicurus, Redstart. — There are only 

 three autumn records for the occurrence of this species 

 —namely, for 20th and 22nd September and 6th October. 

 On the latter date two were captured at the lantern, 

 and sent. The only spring visit noted was that of two 

 birds on 15th May 1910. 



Sylvia curruca, Lesser Whitethroat. — One was 

 killed at the lantern on the night of 17th September 

 1902, and forwarded to me in the flesh. This species 

 has been detected as a visitor on migration at all the 

 Scottish island stations— even on this remote rocky 

 islet— and yet It is very seldom detected on passage on 

 the mainland of Scotland. 



Sylvia borin, Garden-Warbler.~-i:\i^r^ are three 

 occurrences, all for September, from the 5th to the 25th. 



II. T 2 



