BRITISH WARBLERS 
GEOGRAPHICAL DISTRIBUTION. 
There are a few records of the occurrence of this eastern 
species in Great Britain, but only on migration, most of which 
come from Fair Isle. In Heligoland it has been obtained 
once, and from Italy there are two records. Its breeding 
ground extends from the valley of the Petchora and the 
Central Urals on the west, over Northern Siberia and the 
Altai Mountains to Lake Baikal on the east. In the Petchora 
Valley it has been found as far as 68° N. lat., and in 
the valley of the River Obi it is numerous. Southwards 
the bird is not uncommon in the Province of Perm, more 
especially in the neighbourhood of Ekaterinburg. Hastwards 
we find it inhabiting the whole of the valley of the Yenisei, 
but beyond this it becomes scarce and is unknown in T'rans- 
Baikal. In parts of Southern Siberia it is not uncommon, 
and Turkestan seems to be visited to a large extent on 
migration. In winter it visits Baluchistan and India, 
