Locustella tacsanowskia
Habitat
Temperate forest
Range
Breeds from East Siberia to Tibet and south China; winters in north-east India, Yunnan and South-east Asia
The Chinese bush warbler, or Chinese grasshopper warbler, Locustella tacsanowskia, was described by Robert Swinhoe in 1871 and has the older synonym Bradypterus tacsanowskius. It is a warbler of the family Locustellidae (Wikipedia, general species account).
It breeds across the East Palearctic from East Siberia to Tibet and south China, and winters in north-east India, Yunnan and South-east Asia, in temperate forest. The source gives no size, appearance, diet or breeding detail and does not name Nepal (Wikipedia, general species account).