Plain prinia 
(Prinia inornata), also known as the plain wren-warbler or white-browed wren-warbler

The plain prinia (Prinia inornata), also known as the plain wren-warbler or white-browed wren-warbler, is a small cisticolid warbler found in southeast Asia.

The bird is a resident breeder from Pakistan and India to south China and southeast Asia. 

Cisticolidae, Cisticolas (pronounced sis-TIC-olas): from Ancient Greek kisthos, "rock-rose", and Latin colere, "to dwell".
The name of the genus Prinia is derived from the Javanese prinya, the local name for the bar-winged prinia.
inornata, inornatum, inornatus Latin inornatus plain, unadorned.