The Crimson-backed Sunbird is a small bird endemic to India's Western Ghats. A breeding male has a purple throat and crimson rump, and the species feeds on nectar and small prey.
A breeding male has an iridescent green crown, purple throat, maroon breast band and back, crimson rump, and yellow underparts. The female has an olive-green back, brown wings, a yellow breast, and a crimson rump.
It visits hilly evergreen forest, shola woodland, gardens, and flowering trees and shrubs. It eats nectar, insects, and spiders.
An extinction-risk assessment has not been added yet.