274 STUDIES IN BIRD-MIGRATION 



Redstart, Ruticilla phosnicurus. — Single examples 

 have been obtained on five occasions in the autumn, on 

 dates ranging from 23rd September to 7th October. 

 Several of these were killed at the lantern and were 

 forwarded to me. 



Black Redstart, Ruticilla titys. — This somewhat 

 uncommon visitor to Scotland has occurred singly on 

 five occasions, and its visits on three of these have been 

 vouched for by specimens. Four of the occurrences 

 were in November — on the ist and 7th in 1905 ; and on 

 the loth and 28th in I903. The fifth was obtained on 

 27th June 1905 — a remarkable date for its appearance. 



Wheatear, Saxicola cenanthe. — Is a summer visitor 

 to the group, and about four pairs nest on Eilean Mor. 

 But the bird is chiefly a bird of passage, and as such is 

 one of the commonest visitors to the islands. 



The spring passages are recorded from 6th April to 

 29th May, but the birds are most abundant from mid- 

 April to mid- May. 



The return autumn movements do not commence in 

 earnest until the second week in August, are at their 

 height in September, and the last of the rearguard has 

 been observed as late as 20th November (see also 



P- 257)- 



Whinchat, Pratincola rubetra. — There are two 



known visits only. A female occurred on 26th May 



1906 ; and another on 25 th September 1908. Both of 



these were sent for identification. 



Stonechat, Pratincola rubicola. — We know of one 

 occurrence only of this species — namely, a male on 3rd 

 May 1906, which was duly forwarded. 



Wren, Troglodytes troglodytes. — A somewhat frequent 

 visitor, but never more than three have been seen on 



