Rimator malacoptilus
Habitat
Subtropical or tropical moist montane forest
Range
Across the Himalaya from north-eastern India into southern China
The long-billed wren-babbler, Napothera malacoptila (formerly Rimator malacoptilus), is a bird of the family Pellorneidae first described by Edward Blyth in 1847. It lives in subtropical and tropical moist montane forest across the Himalaya from north-eastern India into southern China (Wikipedia, general species account).
The source does not name Nepal and gives no size, appearance, diet, behaviour or breeding detail, so its status on the Nepal list should be checked (Wikipedia, general species account).