Budytes calcarata, Hodgs.
594. :- B. citreola, Pallas. :- Jerdon's Birds of India, Vol. II, p. 225 ; Murray's Vertebrate Zoology of Sind, p. 169.
THE YELLOW-HEADED WAGTAIL.
Length, 6.5 to 7 ; extent, 10.5; wing, 3.25 to 3.5 ; tail, 3.5 ; bill at front, 0.48.
Bill black ; irides brown ; legs black.
Entire head, chin, throat, breast, and under surface, bright yellow; back, rump, and upper tail-coverts dark-brown, nearly black; lesser wing-coverts dark-grey; median and greater wing-coverts dark-brown, margined and tipped with white; the tertiaries broadly margined with white; primaries and secondaries on their outer webs, dusky on their inner, and with whitish margins ; tail dark-brown or black ; the feathers very narrowly edged with greenish ; the four outermost white, except a dusky-brown margin on the inner web for three-fourths their length.
In winter the adult is light ashy-grey above, the nape and sides of the breast darker ; head and under surface yellow, olivaceous on the flanks ; primaries dusky, edged with- greyish-white on their outer webs ; secondaries dusky; tertiaries darker, broadly margined with white ; wing-coverts brown, broadly tipped with white, forming two, conspicuous wing-bands; lower tail-coverts albescent or very pale-yellow; tail, as in the breeding plumage.
The Yellow-headed Wagtail is very common during the cold season in Sind, affecting paddy fields, edges of marshes, and banks of rivers and canals.