VOL. xm.] THE BIRDS OF BARDSEY ISLAND. 75 



A regular autumn passage migrant, in considerable numbers, 

 from the second week in September to the second week in 

 October. 



In September 191 3 a few came to the lantern on the nights 

 of the 6th /7th and 8th /9th, but none were seen on the 

 island until the morning of the loth, when four or five were 

 identified in one of the farm gardens, where they remained 

 all day. Two only were left on the next morning and these 

 had gone by the 12th. A few probably arrived on the night 

 of the 15th with a number of Willow-Warblers, Sedge-Warblers 

 and Meadow-Pipits, but only one bird was positively identified 

 the next morning. None were seen after. 



The Willow- Warbler {Phylloscopus t. trochilus). 



A regular double-passage migrant in large numbers. 



Spring passage, from the beginning of April to the end of 

 the first week in May (once May 19th '20th). 



Autumn passage, from the beginning of August to the end 

 of September ; i 1 largest numbers in early and late August 

 and mid-September. 



As a summer resident, possibly a pair or two breeding in 

 some years. Recorded by Mr. Aplin, " a few about the low- 

 lying parts," which may have been a late band of halting 

 migrants ; not seen by Mr. Coward. In 1913 a single bird 

 was seen singing in one of the sycamore trees by one of the 

 farms on June 15th, but was not seen or heard before or after. 



In September 1913 the island was full of Willow- Warblers 

 on the 3rd, 4th, 5th, 7th and 9th, following large " takes " at 

 the lantern ; the brambles, potatoes, gorse clumps and rock 

 crannies round the coast being full of them. After the oth 

 a gradual diminution took place, and only single odd birds 

 were seen between the 12th and 15th. 



On the I5th/i6th a further small influx took place, that 

 had all disappeared by the 17th. and the only others seen were 

 three on the 20th. 



[To be continued.) 



