The Nilgiri flowerpecker is a tiny bird in the flowerpecker family. Formerly a subspecies of what used to be termed as the plain flowerpecker although that name is now reserved for Dicaeum minullum. Like others of the group, it feeds predominantly on nectar and fruits. They forage within the canopy of forests and are found distributed across South and Southeast Asia. They are non-migratory and the widespread distribution range includes several populations that are non-overlapping and morphologically distinct, some of which are recognized as full species. They are important pollinators and dispersers of mistletoes in forests.
It has darker olive-brown upperparts and paler greyish-white underparts compared to Plain Flowerpecker. Compared with Tickell's Flowerpecker, it has dark bill (grey with darker tip) and darker & browner upperparts and more pronounced supercilium.