226 
BRITISH BIRDS. 
of temperature, from the greateh degree of heat to 
that of the fevereh cold : It hays with us the 
whole year ; but Mr Pennant obferves, that it 
crolfes annually from the Orknies to the Shetland 
ihes, where it breeds and returns before winter — 
a long flight (of fixty miles) for fo fmall a bird. 
Its fong is faid to be very melodious, but weaker 
than that of the common Wren; it has befides a 
fharp fhrill cry, fomewhat like that of the Graf- 
hopper. 
