132 BRITISH BIRDS. [vol. xiii. 



invisible owing to fog, and Pipits under similar circumstances 

 appeared to fear the passage. 



No birds were seen on the 20th, but on the 21st the passage 

 was resumed on a smaller scale and small parties were seen 

 crossing the whole of the southern half of the cultivated area. 



The House-Martin {Delichon u. urhica). 



Unrecorded at the lighthouse, but doubtless a regular 

 double-passage migrant. 



Recorded by Mr. Aplin, " several seen, but not breeding." 

 Not seen by Mr. Coward. 



On the afternoon of June 20th, 1913. two passed over the 

 southern half of the cultivated area, flying low, towards the 

 north, and one was hawking over the fields on the 21st. These 

 were, no doubt, visitors from the mainland. 



In September 1913 no House-Martins were seen until the 

 first large Swallow movement on the 12th, when a few were 

 seen travelling with them. On the 13th a single bird was 

 seen, beating up against a strong north-easterly wind, that 

 it could hardly make any headway against. On the i8th a 

 party of a dozen were flying round over the cultivation, 

 feeding, but their arrival and departure were not witnessed. 

 No others were seen. 



The Sand-Martin {Riparia r. riparia). 



Not recorded from the lighthouse, but probably a regular 

 double-passage migrant. 



A few were seen by Mr. Aplin, but none either by Mr. 

 Coward or by myself, which is only to be expected. 



In September 1913 single birds were seen flying about the 

 island on the 5th, 6th, loth and 13th. The latter was flying 

 round the farm in the evening in a tired and dazed manner. 

 It had been a bitterly cold day, with a strong N.E. wind and 

 rain. The bird evidently sought shelter for the night inside 

 the old lime-kiln, for here it was found dead the next morning. 

 On the 15th two were seen flying south past the west bay ; 

 while on the 19th a single bird (of course there may have been 

 more) was accompanjring the Swallows in their big movement. 



The Swift {Apus a. apus). . 



Not recorded from the light, but probably a regular double- j 

 passage migrant. ' 



Not recorded by Mr. Aplin, but many were seen by Mr. ' 

 Coward, though no nesting place was found. 



In June 1913 eight appeared on the evening of the 14th, 



