a ty ea 2 eee 7 
TS ae ee 
184 BRITISH BIRDS. [vor. x 
associating with Carrion Crows: the species usually occurs 
singly, but I have twice seen pairs of birds and twice parties 
of three. 
Treating the records from both districts together, during 
the autumn migration the earliest occurrence is October 5th 
(1911, Sutton), and all other autumn appearances have been 
during November, with the exception of one as late as 
December Ist (1912, Hampton). The spring passage usually 
takes place during February (January 12, 1915, Miss Carter), | 
the earliest date being February 7 (1909, Packington), whilst 
the latest date I have for the species is March 3rd (1913, 
Packington). 

