Crimson-Backed Sunbird or Small Sunbird is an Indian bird that bears scientific name "Leptocoma minima" is endemic to Western Ghats Mountain Range in India and the Nilgiris Mountain Range.

Feeding of Crimson-Backed Sunbird
Crimson-Backed Sunbird feeds mainly on nectar although they take insects, especially to feed their young.

Habitat of Crimson-Backed Sunbird
Crimson-Backed Sunbird is a tiny bird and is mainly found in forests but is particularly attracted to gardens at the edge of the forest where people grow suitable flower-bearing plants. They usually perch while taking nectar.

Structure of Crimson-Backed Sunbird
Crimson-Backed Sunbirds are tiny, even by sunbird standards, and are only 8 cm long. They have medium-length thin down-curved bills and brush-tipped tubular tongues, both adaptations for nectar feeding.

Structure of Crimson-Backed Sunbird
The adult male Crimson-Backed Sunbird is velvety red on the mantle and wing coverts and there is a broad red breast band. The crown is shiny green and there are pink-violet patches on the throat and rump. The underside from the breast below is yellowish. There is a black edge to the bib that separates the yellow of the underside. The larger purple-rumped sunbird can appear very similar but this sunbird has a darker maroon on the upper side while the flanks and vent are whitish. The eclipse plumage of the male has more olive on the head and velvet red is restricted to the lower mantle and wing coverts. The female Crimson-Backed Sunbird is olive-brown but the rump is distinctly red. They may be found in good numbers in flower-rich gardens at the edges of forests or plantations.

Breeding of Crimson-Backed Sunbird
Crimson-Backed Sunbird is an endemic resident breeder in the Western Ghats Mountain Range of India. The peak nesting season is December to March, but has been known to nest in nearly all months of the year in the southern Western Ghats Mountain Range in India.

Eggs of Crimson-Backed Sunbird
Crimson-Backed Sunbird laid two eggs in a suspended nest on a thin drooping branch of low tree, fern frond or shrub. Both the male and female take part in nest building with the interior mainly built by the female. The eggs are mainly incubated by the female but males may involve themselves in feeding the young. The incubation period is about 18-19 days.

Behaviour of Crimson-Backed Sunbird
The male Crimson-Backed Sunbirds establish and defend feeding territories on flower bearing shrubs and trees. The plants such as Helixanthera intermedia which had a lot of nectar were defended more vigorously. It is being a small bird, Crimson-Backed Sunbird may be preyed on by a number of predators including praying mantises and arachnids. Although Crimson-Backed Sunbirds are residing in many areas, they may make altitudinal movements in response to rains. In some areas Crimson-Backed Sunbirds move to the foothills during the monsoons and move to the higher regions after the rains.