316 STUDIES IN BIRD-MIGllATION 



The earliest spring immigrants from the south are 

 chronicled for 19th February, and the movements are in 

 progress until 13th May, the later migrants being on 

 passage for Northern Europe. 



Southward-going emigrants have been killed late 

 in July. There are a few records for August, and 

 numerous ones for September, October, and down to 

 mid-November. 



The forced winter movements have been known to 

 occur as early as 22nd November, and continue, depend- 

 ing on the severity of the season, until the early days of 

 February, the 8th being the latest noted in the returns. 



TuRDUS iLiACUs, Redwiug. — Common during the 

 spring and autumn passages. 



Recorded as moving northwards at intervals from 

 19th February until nth May, and southwards from 

 2nd October to 20th November. 



Occurs only during the night-time, and many are 

 killed at the lantern — 200 on 21st October 1884. 



TuRDUS PILARIS, Fieldfare. — Only chronicled for 

 the autumn passage southwards. Earliest appearance 

 1 2th October, latest 26th November. Not often 

 obtained at the lantern. 



TuRDUS MERULA, Blackbird.- — A frequent visitor in 

 spring and autumn, and in winter during severe weather. 



Occurs in spring from the latter half of February, 

 throughout March and April, and as late as loth May, 

 the earlier visitors being returning British birds, the 

 later ones en route for Northern Europe. 



The autumn emigratory movements have been 

 recorded as early as 13th August, when birds were 

 killed at the lantern. A few appear in September, but 

 it is not until October and the first half of November 



