18 KESIDENTS 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 Chiif 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 WEEN. Phyllopneuste trochilus (Linnaeus). 

 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 5-2 3-0 0-7 



Willow Wren 5-0 2-6 0-7 



Chiff Chaff 4-7 2-4 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. 



