2. PHYLLOSCOPCS. 69 



Phvllopseuste 'proregulus [Pali), Giehel, Thes. Orn. iii. p. 120 

 (1877). 



Spring plumage. General colour of the upper parts olire-green, 

 yellower on the rump and upper tail-coverts ; a weU-dcfined, 

 narrow, greenish-yellow eye-stripe extends from the base of the 

 bill to the nape ; an irregular and very obscure greenish-yeUow 

 mesial line extends from the forehead to the nape ; the feathers 

 before the eye, and behind the eye to the nape and the crown, and 

 nape between the mesial line and each ej^e-stripe dark olive-green ; 

 a few still darker feathers emphasizing the eye-stripe on the nape ; 

 wing-coverts brown, the lesser wing-coverts with broad olive-green 

 margins, the median and greater wing-coverts with broad, well 

 defined, greenish-yellow tips, forming two consi)icuous bars across 

 each wing; quills brown, all the secondaries and four or five of 

 the primaries with conspicuous well defined yellowish-white tips ; 

 outside webs of the quills margined with yellowish green fading 

 into yellowish white, and becoming broad and conspicuous on the 

 terminal half of the innermost secondaries ; quills emarginated as 

 far as the sixth ; tail-feathers brown, the outside webs edged 

 with yellowish green, and the inside webs with a narrow greyish- 

 white margin. General colour of the underparts white, suffused all 

 over with traces of yellowish green ; axillaries yellow ; under wing- 

 coverts and thighs greyish yellow ; inner margins of quills nearly 

 white. BiU slender, PhyUoscoijine ; both mandibles dark brown, the 

 under mandible somewhat paler at the base. Legs, feet, and claws 

 brown. Third, fourth, and fifth primaries longest ; second jjrimary 

 generally intermediate in length between the sixth and seventh, 

 very rarely between the seventh and eighth ; the exposed part of the 

 bastard primary measures 0-5 to 0"55 inch. Length of wing, male 

 2-35 to 2-\b inches, female 2-15 to 2-0 ; length of tail, male 1-85 to 

 1*7, female 1-7 to 1-55 ; length of culmen 0-4. 



Summer plumage. Xearlj' all the yellow and green with which 

 both the upper and under parts were suffused has been lost by 

 abrasion ; the upper parts have faded into a grey-olive, traces only 

 of the yellowish green remaining on the rump, upper tail-coverts, 

 and the edges of the wing and tail-feathers ; all trace of yellow 

 has gone from the eye-stripe and wing-bars, and nearly all from 

 the underparts, leaving the colour greyish white ; the conspicuous 

 pale tips to the secondaries and some of the primaries have gene- 

 rally entirely disappeared, the lower wing-bar and the pale edges 

 to the innermost secondaries have become very narrow, and traces 

 only of the upper wing-bar are left. 



Autumn plumage. Similar to the spring plumage, but more 

 brilliant, the eye-stripe and the wing-bars yellower, and the upper 

 parts a yellower green ; the mesial line on the crown remains as 

 obscure, and the underparts scarcely yellower. 



Winter plumage. The same amount of abrasion takes place as in 

 summer, but the upper parts do not become so grey, and the eye- 

 stripe and wing-bars retain a trace of j'ellow. 



The Yellow-browed Barred Willow-Warbler breeds in Xorth 



