Dicaeum chrysorrheum
Habitat
Subtropical or tropical moist lowland and montane forest
Range
Nepal, Bangladesh, Bhutan, India, China and several South-east Asian countries
The yellow-vented flowerpecker, Pachyglossa chrysorrhea, was described by Temminck in 1829 and formerly placed in Dicaeum. Unlike most flowerpeckers, its outermost primary feathers are elongated rather than vestigial. It lives in moist lowland and montane forest across Asia, including Nepal, Bangladesh, Bhutan, India and China (Wikipedia, general species account).
The source gives no size, diet, behaviour or breeding detail (Wikipedia, general species account).