288 BRITISH BIRDS. [vol. x. 



the winter and summer plumages are alike. As summer 

 advances the pale tips of the median coverts usually become 

 worn-ofp and sometimes those of the greater coverts are 

 almost entirely worn away. 



Juvenile.— Like the adults, but the upper- parts con- 

 siderably less green and strongly tinged with grejdsh-brown, 

 especially on the crown and mantle, the under-parts whiter 

 — the sides of breast and flanks washed pale brown, pale tips 

 of outer greater wing-coverts whiter and those of median 

 coverts either very small or altogether absent. 



First Winter. — The juvenile body-feathers are moulted 

 from July to September and usually the three innermost 

 secondaries, but not the rest of the wing-feathers and not 

 the wing-coverts or tail, while frequently a number of 

 juvenile body-feathers are retained until the spring moult, 

 which is complete as in the adult. The first winter bird is 

 intermediate between the adult and juvenile in coloration 

 and the wings, wing-coverts and tail become browner as 

 autumn advances, and the pale tips wear off the median 

 coverts and often only a mere trace is left of the pale tips of 

 the greater coverts. 



Yellow-browed Warbler {Ph. s. super ciliosus). 



Adults. — Complete moult in July and August. From 

 February to April the body-feathers are moulted but only 

 occasionally the wings, wing- coverts and tail. The sexes 

 are ahke. The summer plumage is rather browner on the 

 upper-parts than the winter, and is less tinged with yellowish 

 on the under-parts. Abrasion gradually reduces the pale 

 edgings to the inner secondaries and the pale tips to the 

 median wing-coverts. 



Juvenile. — Like the adult, but considerably browner on 

 the upper-parts and slightly tinged with greyish-buff on the 

 under-parts, and the tips of the greater and median wing- 

 coverts tinged with buff. 



First Winter. —The juvenile body-feathers and lesser 

 wing-coverts are moulted in August, but not the rest of the 

 wing-coverts nor the wing- or tail-feathers. After the moult, 

 the bird becomes like the adult. 



Palla-s's Warbler {Ph. }}. proregaliis).] 



Adults. — Complete moult in August and Sejjtember, 

 In March and April the body-feathers are moulted, but appar- 

 ently not the wing-coverts, wing- or tail-feathers. The 

 sexes and the winter and summer plumages are alike. 



