18 RESIDENTS AND MIGRANTS. 
Wren in his park in the co. Fermanagh in June 
1870; and Mr. Blake Knox, of Dalkey, has a specimen 
in his collection which was killed by a boy, with a 
catapult, at Glen Druid, co. Dublin. 
The Wood Wren is much greener on the back and 
whiter on the underparts than either of its congeners, 
and has a well-defined superciliary streak of sulphur- 
yellow, which in the Willow Wren and Chiff Chaff is 
much shorter and paler. The legs of the Wood 
Wren and Willow Wren are brownish flesh-colour, 
while those of the Chiff Chaff are dark brown. 
WILLOW WREN. Phyllopneuste trochilus (Linneus). 
A summer migrant, generally distributed. 
CHIFF CHAFF. Phyllopneuste rufa (Latham). 
A summer migrant, generally distributed, although 
rare in the north of Scotland. 
The three species differ in size as follows :— 
Length. Wing. Tarsus. 
in. in. in. 
Wood Wren... .... 2 chic peer, ot Oana 0-7 
WallowaW.ren\ (9.094 10:0) nee ye 2 Ob tear: 0-7 
Chitts@hattG=...-. Aerated exe O42 2 oe 0:6 
Not only is the Wood Wren the largest of the 
three, but it has comparatively the longest wings and 
the longest legs. The wings when closed cover three- 
fourths of the tail. In the Willow Wren, under the 
same circumstances, less than half the tail is hidden. 
The Chiff Chaff’s wing is shorter again. 
