258 BRITISH BIRDS. [vol. xiv. 



evening and turned up the very bright Ughts of the operating 

 theatre, which has a large window extending three-quarters 

 of the width and height of the room. After the hght had 

 been turned on for a time a Yellow Bunting flew in, and 

 shortly after another flew against the glass. I caught the 

 bird and put it in a basket for the night, letting it out at 

 dawn next morning, when it flew away quite strongly and 

 uninjured. The night was thick and wet. The birds might 

 have been disturbed by an Owl, but it was about 9 p.m. 

 When working in this theatre during the last six years, 

 I have often noticed birds which are aliens to Woburn, such 

 as Gulls, Waders, etc., take the line of flight which passes 

 over the hospital, so much so that a pair of field-glasses has 

 become part of the theatre equipment. Still the evidence of 

 migration is shght, and I record it only for what it is worth. 



M. Bedford. 



SPRING MOVEMENTS OF PIED WAGTAILS IN 

 BERKSHIRE. 



Since the middle of January we have had flushes of Pied 

 Wagtails {Motacilla a. Ingubris) in Reading ; sometimes 

 half a dozen running and calling on roof-trees and chimneys. 

 At sunset on February 15th I counted twenty on my tennis- 

 court ; on February 19th, thirty-six at one time ; on 

 February 27th, seventeen. As only a single pair ever nest 

 in my garden, these must have been migrants. They were 

 not feeding, but courting, preening and fighting, and were 

 chiefly immature. There were no White Wagtails (M. a. alba) 

 with them. H. M. Wallis. 



WHITE-TAILED EAGLE IN DERBYSHIRE. 

 On December 20th, 1920, an Eagle was observed on the moors 

 near Derwent, in north Derbyshire and south-west Yorkshire, 

 and on January 9th, 1921, accompanied by a friend, I was 

 fortunate in having a good view of the bird on the wing. 

 It appeared over the sky-line, making for the wood where we 

 were, but seeing us swerved away, gradually rising without 

 any perceptible movement of the wings to a great height, and 

 finally disappearing over the hills on the other side of the 

 valley. On February 8th, the Eagle was shot from a " hide " 

 when returning to the plantation in which it had been 

 observed to roost, close to the Yorkshire border. It proved 

 to be an immature White-tailed Eagle {Haliceeiiis albicilla), 

 with the characteristic heavy bill, wedge-shaped tail and 

 bare tarsi. The span of its wings was 7 ft., weight 10 lb., 

 total length 36 ins. Iris dark brown, cere dull yellow, bill 



