Larus gelastes, Licht.
981quat. :- Murray's Vertebrate Zoology of Sind, p. 317.
Length, 17 to 18.5; wing, 11.5 to 12 ; tarsus, 2 to 2.12 ; bill at front, 1.6 to 1.82.
Bill red, occasionally with a blackish tinge ; irides pale yellow ; eyelids bright red ; legs and feet deep red.
Summer plumage. :- Entire head, neck, upper back, rump, upper tail-coverts, entire lower parts and tail, white, tinged with rosy, except on the head, when the rosy tint is scarcely perceptible ; mantle, secondaries, tertiaries, lesser and median wing-coverts, and the upper greater-coverts, also the wing-lining, pale bluish french-grey, rather pearly-grey on the back and tertiaries ; four or five of the primary-coverts and edge of the wing white ; primaries, the first white, except the outer web, tip and margin of the inner web ; secondaries to fourth primaries white, the margins of their outer webs narrower and decreasing in extent terminally, and broadening and running up basally on their inner webs, with the black tips broader successively ; fifth and sixth primaries tipped white ; the outer web of the fifth greyish, and that of the sixth slightly darker with a subterminal dark band.
Very common during winter in the Kurrachee Harbour and adjoining coast.