Sterna anglica, Mont.
983. :- Jerdon's Birds of India, Vol. II, p. 836; S. nilatica, Hass.; Butler, Guzerat; Stray Feathers, Vol. IV, p. 31 ; Deccan, Stray Feathers, Vol. IX, p. 440 ; Murray's Vertebrate Zoology of Sind, p. 320.
THE GULL-BILLED TERN.
Length, 14 to 16 ; expanse, 38 to 40 ; wing, 13 to 14.5 ; tail, 5 to 6; tarsus, 1.5 ; bill at front, 1.5.
Bill black; irides dark brown; legs black.
In summer, the forehead, crown, and nape, deep black; mantle, wings, and tail, light grey, paling on the tail; quills hoary-grey; the first five primaries tipped with dusky on their inner webs ; sides of the head and plumage beneath pure white.
In winter, the head is white with grey streaks, the ear-coverts and (more or less) round the eyes dusky.
The young is somewhat similar to the adult in winter plumage, but has the primaries all dusky grey.
The Gull-billed Tern is very common during the cold season in suitable places throughout the region. It is very doubtful whether any of them remain to breed.