506 Dr. A. L.Thomf^on : Eesidfs of a Studi/ of [Ibis, 



The four cases of birds recovered in Norway, three of 

 them from the part of that country lying near the Arctic 

 Circle, serve to indicate the summer quarters of at least 

 some of the birds which reach the British Isles in winter. 



Finally there are the following reappearance records of 

 Starlings which were marked on migration at British light- 

 houses : — 



Case 458 : Marked at night at the lighthouse, Isle of May, Firth of 

 Forth, on 12.10.13 ; 

 killed near Omerbane, Co. Antrim, Ireland, on 29.1.14. 

 Case 456: Marked at night at St. Catherine's Lighthouse, Isle of Wight, 

 on 23.11.13; 

 killed at St, Andrew's, Guernsey, on 6.1.14. 

 Case 822 : Marked at night at St. Catherine's Lighthouse, Isle of Wight, 

 on 13.3.15 ; 

 caught near Walsall, Staffordshire, on 25.12.16. 

 Case 452 : Marked at night at the Skerries Lighthouse, oft' Anglesey, 

 North Wales, on 23.10.12; 

 caught at Svendborg, Denmark, about 10.5.14. 



Of these records, Case 452 was obviously a winter visitor 

 and Case 458 not improbably the same ; the other two may 

 have been native birds, but in view of the conclusions 

 already suggested it is of interest that in all the instances of 

 this kind there is at least a possibility that the subjects were 

 winter immigrants. 



Witherby (26) has a number of records not yet published 

 in collected form, and the species has also been largely 

 studied by Mortensen (9, 11, 12). 



VIII.— THE SONG-THRUSH (Tiirdns musicus Linn.) : 

 ANALYSIS OF EECORDS. 



The very complex movements of this species have been 

 fully worked out by other methods ((_•/. Eagle Clarke, 

 Report Brit. Assoc, 1900, p. 404 ; also B. 0. C. Migration 

 Reports), and it is known that different individuals may be 

 respectively residents, summer visitors, winter visitors, or 

 birds of passage. Most of the records here available refer 



