TERNS and NODDIES.
Tehari, India; Ramadasu (Telugu); Liniya, Ceylon; Myit-hway, Burma.
Bill almost straight.; both mandibles of about equal length, with acute tips. Nostrils linear. Hind toe small, raised, and free. Web usually scalloped. Tail forked (rounded or slightly pointed in Hydrochelidon and Phaethusia). Long pointed wing. More lightly built than Gulls, and have a different flight. Feed on fishes. Rarely settle on the water.
(i.) Tail-feathers rounded or slightly pointed (236, 237).