318 STUDIES IN BIRD-MIGRATION 



schedules on several occasions for May, dating from the 

 first week to the middle of the month. I have never, 

 however, received a specimen or a wing of this bird. 



Troglodytes troglodytes. Wren. — Recorded and 

 captured on a few occasions in the autumn, at dates 

 ranging from 6th October to 23rd November. I saw it 

 in small numbers during the great movement on the 

 night of 1 6th October 1901, and secured an example. 



MusciCAPA GRisoLA, Spotted Flycatchei\ — There are 

 a few entries in the schedules for May and September, but 

 I have no record of having received specimens or wings. 



MusciCAPA ATRiCAPiLLA, Pied FlycatcJiei". — Has not 

 been observed in spring. I captured one at the lantern 

 on the early morning of 23rd September during a rush 

 southwards of British summer birds. There are also a 

 few other records, all for late September. 



HiRUNDO RUSTiCA, Swallow. ■ — Obscrvcd in spring, 

 moving northwards, from 12th April to 6th June. 

 Most of the records are for May, when the bird occurs 

 abundantly down to the end of that month. At this 

 season the visits are chiefly during the night-time. 



A few appear during the latter half of July, many in 

 September, and in October as late as the 20th. In 

 autumn it is observed, with few exceptions, between the 

 hours of 6.30 A.M. and i p.m. 



Ctielidon urbica, Martin. — Has rarely come under 

 notice. An adult was flying round the tower during the 

 afternoon of 29th September, and another at 4 p.m. on 

 1 2th October. One is recorded for the night of 29th 

 September. 



Cotile riparia, Sand-Martin. — A bird, captured on 

 3rd August 1886, affords the only record of the 

 occurrence of this species. 



