38 Ornithological Observations in the Sutlej valley, [No. 1, 



ashy grey, with a very slight tinge of yellow, but having distinct traces 

 of this colour on the outer tail feathers. The male has a little more 

 yellowish rufous colouring on the wings, and the black central spot 

 somewhat smaller. 



Other male specimens, shot near Kotegurh early in the spring, 

 have the outer edgings of the wing feathers (except towards their 

 terminations) bright rufous, as likewise the basal portions of the 

 outer webs of the outer tail feathers. In the females from the same 

 locality, the edgings of the wings and of the tail are more yellowish, 

 and the central, black wing spot much smaller. All the specimens 

 from Kotegurh have the upper plumage distinctly olivaceous, especially 

 on the back, while the Lahul specimens are more ashy. The longer 

 Wing coverts are always more or less chestnut and all the tail feathers 

 are broadly tipped white, or sometimes in the male a little rufous. 



The voice of this species is a prolonged, monotonous whistle, being 

 constantly repeated ; during the winter it lives, I am told, partly 

 on insects, searching carefully after them in the hollows of willow- 

 trees, &c. partly on buds of different shrubs. This and the next 

 species belong to the few* birds which remain in Lahul during the 



winter. 



115. Trochalopteron lineatum, Vig., (II. 50), is one of the 

 most common species of birds all through the N. W. Himalayas. It 

 is found from the low hills, near the plains, through the entire extent 

 of the Sutlej valley up to Sungnum, and very probably farther east- 

 wards. It is not usually a migratory bird, for it remains at Kotegurh, in 

 Kulu, and even in Lahul, all the year round, feeding on insects or 

 buds,' like the previous species. The specimens, which I procured 

 in Lahul, were somewhat more ashy on the head and breast, and the 

 central edgings of the outer webs of the wing feathers were less 

 yellowish rufous, while they are generally conspicuously so in speci- 

 mens shot in the lower hills. There is scarcely any difference in the 

 brightness of the colours between male and female. 



116. Sibia CAPisTUATA, Vi g., (II. 54) . The shorter wing-coverts 

 of the quills are black ; of the longer coverts the first are black, the 

 next white for the basal half, the rest grey on the outer, and black on 

 the inner webs ; the last coverts are also white, with ashy and rufous tips. 



* Only about a dozen species. 



