THE COMMON TREE-WARBLER. 



{Hypolais hypolais.) 



' I 'HE epithet "common" can only apply to 

 A this Warbler as regards its continental 

 home, for in Great Britain it is a very rare visitor, 

 of which only some half-dozen specimens have 

 been captured, and this is the more curious, as 

 it is really a common bird in other parts of 

 Europe, and breeds in North-eastern France, as 

 well as in Holland and Belgium. It cannot be 

 the "silver streak" of sea which separates Eng- 

 land from these countries, which prevents the 

 bird from visiting our islands, for in winter it- 

 migrates into South Africa, and in summer it 

 goes as far north as 67° N. Lat. in Norway, and 

 to the vicinity of Archangel. In the West of 



