SYLVIA.] 



AVES INSESSORES. 



Ill 



Common in the southern, western, midland, and some of the northern 

 counties, but not generally diffused. In Cambridgeshire very rare. 

 Haunts woods and tall trees ; being first heard towards the end of April 

 or beginning of May. Note very peculiar, resembling the word twee 

 repeated several times in succession, at first slowly, but afterwards in a 

 hurried manner, and accompanied by a singular shake of the wings. 

 Nest placed on the ground, of an oval form, constructed of dry grass, 

 dead leaves, and a little moss, lined with finer grass and a few hairs. 

 Eggs six in number. 



57. S. Trochilus, Lath. (Willow-Wren.) Upper 

 parts pale olive-green, tinged with yellow : under tail- 

 coverts yellowish white: wings with the second quill equal 

 to the sixth ; the third, fourth, and fifth, with their outer 

 webs sloped off at the extremity. 





v/ 



1 -*<. 



J 5- 



wveu . 



Wood- 



\NTi Ho w- wre 11 . 





i 







- 



. <t 



early part of the Spring, and appear to be" the young males of the pre- 

 ceding year. (Egg.) White, with numerous small specks of pale red : 

 long. diam. seven lines and a half; trans, diam. six lines. 



Of frequent occurrence in gardens, plantations, hedges, willow-grounds, 

 and a variety of other situations. On the whole a much more generally 

 diffused species than the last, but, according to Montagu, does not extencl 

 so far westward. Song pleasing, but simple, consisting of several plain- 

 tive notes in a regularly descending scale; heard from the middle of April 

 Ito the beginning of July. Nest placed on the ground, nearly spherical, 

 Jwith a small opening at the side near the top ; composed of dry grass, 

 istalks, and other herbage, and profusely lined with feathers. Esgs five 

 Ito seven ; hatched the end of May or beginning of June. 



58. S. Hippolais, Lath. (Chijf-Chaff.) Upper parts 

 olive-green, 'tinged with yellow; beneath yellowish white: 



