GREY-HEADED YELLOW WAGTAIL. 127 



In the spring of 1879 an example was obtained by the 

 late James Cunningham, on the side of a small pond at 

 Fern Hill, near Warley, in the Borough of Halifax ; it was 

 recorded at the time, but disputed, and sank into oblivion 

 until re-discovered by Mr. A. Crabtree, F.L.S., who kindly 

 submitted the specimen to Mr. W. Eagle Clarke and myself. 



Another occurred on the 2Qth March 1892, on the banks 

 of a small stream intersecting the sand-hills between Redcar 

 and Marske ; it was brought in the flesh to me, and is now in 

 my possession. 



Other reported occurrences are : 



At Ackworth, where one was observed on ist May 1891, 

 in a flock of Yellow Wagtails, by Mr. J. H. Fryer (Major 

 Arundel MS.). 



The late J. Cordeaux mentioned an example at Easington 

 on I7th April 1897, following the plough, " seen by a com- 

 petent observer." (Nat. 1898, p. 237.) 



And on 6th May 1900, three individuals were noted at 

 the Teesmouth, consorting with a flock of Yellow Wagtails. 

 (C. Milburn MS.) 



GREY-HEADED YELLOW WAGTAIL. 



Motacilla borealis (Sundevall). 



Accidental visitant from northern Europe and Siberia, of extremely 

 rare occurrence. 



This species, which inhabits northern Europe and Siberia, 

 migrating in winter to Africa and India, had not been recorded 

 in Great Britain until the 20th of May 1903, when a Yorkshire 

 example was exhibited on behalf of Mr. W. Eagle Clarke and 

 myself at the meeting of the British Ornithologist' Club,* 

 and the following details supplied by Mr. W. Eagle Clarke : 



" This specimen was submitted for determination by 



*At the same meeting of the B.O.Club Mr. W. R. Butterfield 

 exhibited two male examples of this bird procured on I3th May 1903, 

 near Willingdon, Sussex. 



