136 STUDIES IN BIRD-MIGRATION 



native species more than fifty years ago. Since then it has 

 not been known to occur, even as a casual visitor, in the 

 British Islands. That it should have reappeared among 

 us at a locality so far removed from its former English 

 haunts, is most remarkable. Even Heligoland, with its 

 unrivalled record of feathered waifs, cannot boast of 

 having Savi's Warbler amongst its long list of dis- 

 tinguished visitors. Fair Isle is the Ultima Thule of its 

 known wanderings in any land ; and, needless to remark, 

 it had never been known to visit Scotland before. 



LocusTELLA N^viA, Grasskoppcr- Warbler. — This 

 species has been known to occur on two occasions in 

 spring — namely, on the 14th of May 1908, when two 

 appeared ; and on the 29th of May 1907, when a female 

 was killed during a rush of birds. 



So far as I am aware, this species Is of rare occurrence 

 in Norway ; and its appearance in Fair Isle may possibly 

 be attributed to its having either overshot its summer 

 range when seeking its breeding haunts in our islands, or 

 been carried out of its course by unfavourable weather 

 conditions. 



Locu STELLA LANCEOLATA, Lauceolated Grasshopper- 

 Warbler. — On the 9th September 1908, I secured a bird 

 of the year of this species, as it rose from some rough 

 grass. It was new to Scotland, and had only twice 

 previously been recorded for Western Europe, namely, 

 at North Cotes in Lincolnshire on i8th November 

 1909; and at Heligoland on 13th October 1909. A 

 second Scottish example was caught at the Pentland 

 Skerries on 26th October 19 10. 



This species is a summer visitor to the whole of 

 Siberia and the northern Isles of Japan, but is of very 

 rare occurrence in European Russia. Its winter quarters 



