238 MOTACILLINZ. 
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, 2°75; tarsus, 0° ; 
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 
toa 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 
