River tern or Indian river tern (Sterna aurantia)

The river tern or Indian river tern (Sterna aurantia) is a tern in the family Laridae.
The bird is a resident breeder along inland rivers from Pakistan east through the Indian subcontinent, to Myanmar, Thailand, and Cambodia.
This species is only found on freshwater, not in tidal water places.

Charadriiformes, Charadriidae, Charadrius: Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate; from Ancient Greek kharadrios a bird found in ravines and river valleys (kharadra, "ravine").

Laridae:from Ancient Greek laros or Latin larus, which appears to have referred to a gull or other large seabird.

The genus name Sterna is derived from Old English "stearn", "tern".

Aurantia is a New Latin term meaning "orange-colored," "tawny," or "golden," primarily derived from the Latin aurum (gold).