234 STUDIES IN BIRD-MIGRATION 



the bay on the 2nd and 8th of September, and two on 

 the 7th of the month. 



* Calidris arenaria, Sander ling. — In 19 10 a party 

 of three birds in immature dress were present on the 

 sandy beach, at the head of the East Bay, on the day 

 of our arrival, ist September, and remained until the 

 6th. None were seen later. This species is probably a 

 regular bird of passage in both spring and autumn. 



* Machetes pugnax, Ruff. — A male was seen on the 

 grassy slopes above the cliff on the south side of the 

 bay from 3rd to 6th September 19 10. Another, or 

 possibly the identical bird, was observed on the same 

 ground on the 13th. 



ToTANUS HYPOLEUCUS, Common Sandpiper. — This 

 species may be a more or less regular visitor during the 

 spring and autumn migrations to and from its northern 

 summer haunts. Milner (p. 2061) saw one at St Kilda 

 on 14th June 1847 ; and Her Grace the Duchess of 

 Bedford informs me that she observed a pair there on 

 23rd August 1910. 



In 191 1 we saw one on the rocks bordering the 

 bay on the 2nd of September, and another on the 

 6th. 



* ToTANUS CALIDRIS, Redshank. — I had expected to 

 come across the Redshank on my first visit, but the 

 bird seems to be an uncommon species at St Kilda. 

 The only known instance of its appearance was on 

 loth September 191 1, when two of these birds were 

 seen, and heard uttering their unmistakable call-notes, 

 as they flew across the bay towards the island of 

 Dun. 



NuMENius ARQUATA, Curlew. — Macaulay (p. 160) 

 enumerates " Curlews " amongst the birds of St Kilda 



