103 



THE SEDGE-WARBLER. 



Acrocephalus phragmitis (Bechst.). 



With the exception of a few stragglers which appeared on 

 the 15th of April, the first immigration of this species was 

 noted in North Devon on the 28th of that month. During 

 the two following days Sedge- Warblers continued to arrive 

 in Dorset and Hants, while the earlier arrivals spread as 

 far north as Yorkshire. Two days later they had become 

 generally distributed, except in the extreme north. 



During the next ten days they continued to arrive 

 steadily, and though the records were somewhat scanty, their 

 immigration seems to have occurred chiefly on the western 

 half of the south coast, as they were most numerous in the 

 west, and there were very few records from East Anglia. 



By the 11th of May, however, the species had spread east- 

 wards into Kent, Norfolk and Cambridge, and was noted as 

 being very numerous in the last-named county. 



Further small immigrations seem to have arrivedi between 

 the 15th and 17th, and again between the 24th and 26th, 

 but the records were insufficient to enable these movements 

 to be definitely traced. A nearly finished nest was noted 

 in Radnor on the 23rd of May. 



On the Oth of June a single bird struck the lio-ht at 

 St. Catherine's, but it appeared to be alone, and there was 

 no evidence of any definite movement. 



It should be noted that although the bulk of the birds 

 arrived by a westerly route, the earliest arrivals were noted on 

 the east, in Kent and Essex. These, however, may have 

 been stragglers from some continental movement, of which 

 we have" no record. 



