102 BRITISH BIRDS. [vol. xiii. 



overgrown with cow parsley, etc., entirely confined to the 

 seven tiny willow-beds : the largest of these held two pairs 

 and the others a pair each, so that in this year there was a 

 total of nine breeding pairs. One of the males had picked up 

 and incorporated into his song a number of Blackbird notes, 

 so that now and then his song was barely recognizable. They 

 were all feeding young in the nest on June 20th. 



The summer residents had apparently all left the island 

 before September 3rd, for although Sedge-Warblers occurred 

 at the light on the night of the 2nd 3rd, none was seen 

 on the island on that day and only six on the 4th. Further 

 examples were taken at the lantern on three more nights 

 between then and the 9th, but only single scattered birds were 

 found in the daytime, until the latter date, when there was a 

 fair sprinkling in the potato fields. These had all gone by the 

 next day ; single birds were seen on the nth and 12th, a few 

 on the i6th, and one only on the i8th. 



The Garden-Warbler {Sylvia borin). 



Once recorded from the light in spring, a few on May 

 I2th/i3th, 1914. 



A regular passage migrant in small numbers in autumn 

 between the middle of August and the first week of October. 



None was seen on the island in September 1913, though 

 single birds were taken at the lantern on three nights in the 

 first week. 

 The Blackcap {Sylvia a. atricapilla). 



Once recorded from the light in spring, a few on April 

 2ist '22nd, 1912. 



A regular passage migrant in autumn between the second 

 week in September and the end of October. 



The Whitethroat {Sylvia c. communis). 



A regular double-passage migrant in large numbers. 



Spring passage, from the third week in April to the beginning 

 of June. 



Autumn passage, from the third week in August (once 

 August 6th '7th), to the beginning of October, in heaviest 

 numbers from the end of August to mid-September. 



As a summer resident evidently not constant. Reported 

 as " fairly numerous about the taller gorse " by Mr. Aplin, 

 and seen also b}^ Mr. Coward. In the latter case the birds 

 must almost certainly have been breeding, though in the 

 former it is possible that the birds seen were a late band of 

 migrants halting. In June 1913 there was certainly not a 

 bird on the island. 



In September 1913 considerable numbers came to the 



