BIRDS OF THE BRITISH ISLES. 85 



Millow Wren. 



THE Willow Wren (Phylloscopus trochi/us, Linnaeus) is a 

 common summer visitant to the British Islands from Africa 

 and Persia, moving northwards to the Arctic Regions. The 

 adult in summer has the general colour of the upper parts 

 olive-green, shading into yellower on the rump; wing-coverts, 

 olive, with edgings of olive-green ; primaries, brown, tipped 

 narrowly with greyish-white; tail, dull brown; eye-streak 

 and ear-coverts, pale yellow; most of under parts, white, 

 tinged with yellow; breast and flanks, suffused with yellowish- 

 buff; irides, hazel; bill, legs, and feet, brown. Length, 

 about five inches. The female is similar to the male in 

 colouration. The young show more yellow on the under 

 parts than the adults. 



