Leptoptilus argalus, Lin.
915. :- Jerdon's Birds of India, Vol. II, p. 730; Butler, Guzerat; Stray Feathers, Vol. IV, p. 21; Deccan, Stray Feathers, Vol. IX, p. 432; Murray's Vertebrate Zoology of Sind, p. 266 ; Swinhoe and Barnes, Central India; Ibis, 1885, p. 135.
Length, 60; wing, 30 ; tail, 11; tarsus, 10.5 ; bill at front, 12 Bill pale dirty-greenish; irides greyish-white; legs greyish-white.
Adult in breeding plumage; whole head, neck, and gular pouch bare, with a very few scattered short hairs, yellowish red mixed with fleshy, and varying much in tint in different individuals ; a ruff of white feathers bordering the upper part of the back, lengthened and somewhat loose in texture on the shoulder; upper plumage, including the lesser and median wing-coverts, slaty black, ashy or slaty in fresh moulted birds, with a slight green gloss ; the greater-coverts silvery-grey; primaries and secondaries black, slightly glossed externally ; tertiaries silvery-grey, gradually passing into the greater-coverts, and with them forming one long conspicuous wing-band; two or three of the innermost feathers, slightly decomposed in structure; scapulars with a tinge of grey ; lower plumage white.
In non-breeding plumage the silvery-grey wing-band is wanting, the whole plumage is more dull, and the nude skin of the head and neck less mixed with red.
The Adjutant is not uncommon during the rainy season in Central India and Guzerat; it is much more rare in the Deccan, and in Sind it i3 seldom met with-