THE FLANNAN ISLES 275 



any occasion. It is impossible to say what the precise 

 nature of these visits is, but they suggest that the bird 

 may possibly be resident on one or other of the islands, 

 for it has been seen in January, February, March, 

 April, October, and November. We did not see it, but 

 it might easily have escaped our notice on the face of 

 steep cliffs, especially where the marguerites were 

 abundant. 



Spotted Flycatcher, Mitscicapa grisola. — Single 

 birds have been captured, and forwarded, on three 

 occasions — viz., on 4th June 1906, on 14th June 1905, 

 and on 22nd September 1909. 



Pied Flycatcher, Mitscicapa atricapilla. — See 

 observations on p. 257. The further records are for tw^o 

 birds killed at the lantern (and sent) on 22nd September 

 1908. 



Swallow, Hirundo riistica. — A few appear annually — 

 chiefly in May, but occasionally in June, the dates 

 ranging from 13th May to 3rd June. 



There are only three records for autumn — namely, 

 for 6th, loth, and 13th September. 



House- Martin, Chelidon tu^bua. — As in the case of 

 the Swallow, a few visit the islands annually, mainly in 

 the spring. They have been observed from loth April 

 to 1 8th June. On the latter date, one which had been 

 killed by a Merlin was sent to me. 



There are two records for autumn — 4th August 

 1907 and 3rd November 1907. 



Sand- Martin, Cottle riparia. — There are records 

 for the occurrence of single birds on 23rd and 30th June 

 1 901, but none are known to have appeared since. 



Swift, Cypselus apus, — The Swift appears annually, 

 late in spring, when single birds have occurred from 



