238 MOTACILLIN.E. 



Bill black ; irides brown ; legs pale-brown. 



Plumage above pale-grey, with a wash of olivaceous ; upper tail- 

 coverts pale-yellow, also the edges of the tertiaries ; supercilium, 

 chin and throat, white ; rest of the lower parts pale-yellow, greenish 

 on the middle, and laterally pure yellow ; a white- wing band ; wings 

 and tail brownish-black ; the three outer tail-feathers on each side 

 white on the inner web, the outermost wholly so. 



In summer the chin and throat become black with a whitish 

 border, and the yellow of the lower parts is darker. 



During the cold season, the Grey and Yellow Wagtail is very 

 common throughout the country. 



GENUS, Budytes, Cuvier. 



The characters are the same as those of motacilla, but the 

 tertials barely so long ; the tail shorter ; tarsus longer and stouter ; 

 hind-toe and claw lengthened, the latter very much so, and but 

 slightly curved. 



Budytes cinereocapilla, Savi. 



593. B. viridis, Gm. Jerdon's Birds of India, Vol. II, p. 222 ; 



Butler, Deccan ; Stray Feathers, Vol. IX, p. 410 ; Motacilla 



cinereocapilla, Savi., Swinhoe and Barnes, Central India ; Ibis, 



1885, p. 127. 



THE SLATY-HEADED FIELD WAGTAIL. 



Length, 6 '5 ; expanse, 9 '5 ; wing, 3'13 ; tail, 275 ; tarsus, 0'8 ; 

 bill at front, 0'45. 



Bill black ; irides dusky-brown ; legs black. 



The usual plumage of adult birds in winter is olive-green 

 above, with a white or occasionally yellow superciliary mark ; 

 beneath, the chin and throat whitish, the rest yellow, more or 

 less pure ; wings dusky, with two dull whitish-yellow cross 

 bands, formed by the tips of the coverts, and the tertials broadly 

 margined with yellowish ; tail black, slightly margined with 

 greenish, and the two outermost feathers on each side chiefly 

 white. 



At the spring moult, the whole cap, lores and ear-coverts change 

 to a bluish ash-grey, with or without a white or yellow super- 

 cilium, which, however, is not always present, and disappears 

 eventually by the change of color which takes place in the fea- 

 thers themselves at a later period. The lower parts, too, become 

 more pure and bright yellow ; the chin is white, and the throat 

 yellow, with its lateral border white. 



A little later in the season, the lores and ear-coverts become 

 darker by a change in the feathers themselves, and finally change 

 to a deep black ; and in full breeding plumage, the whole cap, 

 lores, and ear-coverts, are deep black. 



Young birds of the year are light brownish-grey, purer on the 

 nape and rump ; wings and tail dusky, the former with two 



