THE DARTFORD WARBLER. 



141 



approach of an observer, it creeps into a bush, and remains 

 concealed until the danger is past. The nest as described 

 by Montagu and Meyer is a flimsy structure, very like 

 that of the Lesser Whitethroat, placed in the fork of a 

 furze-bush selected for its thickness and difficulty of access. 

 Whether it is migratory in its habits, seems to be not 



THE DARTKORU WARBLER. 



clearly ascertained. Many specimens have been observed 

 in mid-winter, and Eennie states that he has seen one 

 hovering over furze and singing like a Whitethroat, as early 

 as the end of February. Perhaps, as is the case with 

 Stonechats, some individuals migrate, while others remain 

 with us all the year. 



