190 BRITISH BIRDS. [vol. xiii. 



progress, past the island, and by that date any local bred young 

 would have been old enough to have got down to the shore or 

 even to have left the island, as had almost certainly happened 

 with some of the Lapwings. Also there is the fact that some 

 of the local Blackbirds had picked up Redshank notes, which 

 they would hardly have had an opportunity of doing unless 

 Redshanks w^re breeding near them ; I have twice before 

 met with Blackbirds that had acquired these notes, each 

 time in a place where Redshanks were breeding in numbers. 

 Personally, I believe that Redshanks breed on Bardsey, at 

 any rate in some years. 



In September there were quite a number scattered round 

 the periphery of the island, considerably more than were there 

 in June, but no fluctuation was noticed in their numbers. 

 They were generally in small flocks of six or eight up to 

 seventeen or eighteen birds, and always on the margin of the 

 sea or on the uncovered rocks at low tide, except on the 13th, 

 when owing to a N.E. gale they were concentrated with the 

 Turnstones at the east bay and on a neighbouring stubble. 



The Bar-tailed Godwit {Limosa I. lapponica). 



Once recorded from the light, in numbers on November 

 I3th/i4th, 1909. 



The Common Curlew {Numenms a. arquata). 



A regular double-passage migrant in large numbers. 



Spring passage, from mid-February to mid-April. 



Autumn passage, from mid-August to the end of October ; 

 also recorded once in January, and probably occurs in every 

 month of the year. 



Recorded both by Mr. Aplin and by Mr. Coward. In June 

 1913 single birds and pairs were seen on several occasions off 

 the west coast and invariably flying south. 



In September several small flocks were almost ahvays 

 present, and odd birds were often seen flying past the island 

 or passing over. It is very difficult with this species to say 

 whether any real migration was going on or not. The numbers 

 were certainly smaller from the 4th to the 6th than they were 

 on the 3rd, and a distinct increase was noticed on the 7th. 

 From the 8th to the 12th a gradual diminution seemed to be 

 going on. About thirty were seen on the loth, and six only 

 on the I2th and three folloMdng days. On the i6th the 

 numbers rose to about thirty again, but after that date only 

 about half that number were seen each day. One of their 

 , favourite feeding grounds was on the short, sheep-cropped 



:b 



