4ti REPORT ON THE MIGRATION OF BIRDS. 



migration lines by the prevailing winds from N. and N.E. to 

 E. and S.E., generally strong and frequently increasing to a 

 severe gale. The fact of ten Ospreys having been seen or 

 procured has already been mentioned ; there were two occur- 

 rences of Tengmalm's Owl ; the Rustic Bunting at Spurn ; Lapp 

 Bimting at Tetney, on Lincolnshire coast ; White-spotted Blue- 

 throat at Cley, in Norfolk ; Glossy Ibis, five occurrences ; 

 Sabine's Gull, two on Norfolk coast ; Kentish Plover, Lincoln- 

 shire ; Blue-winged Teal, Teesmouth ; and numerous other 

 occurrences of scarcely secondary interest. These, as well as 

 the rarer occurrences in Heligoland, have been separately treated 

 in the notes on each species observed. 



