The green-backed twinspot or green twinspot (Mandingoa nitidula) is an estrildid finch found in many parts of Sub-Saharan Africa. The IUCN has classified the species as being of least concern.

Green-backed Twinspot.
 
The green-backed twinspot or green twinspot (Mandingoa nitidula) is an estrildid finch found in many parts of Sub-Saharan Africa. The IUCN has classified the species as being of least concern.
Small, chunky, dark green waxbill with bright white “twin spots” across the black belly. The male has a red face, and the female a yellowish one.
Found in and around forest, where it prefers dense tangles and openings with seeding grass. Distinctive call is a short, high trill, often given in flight. The rarely heard song is a complex mix of many different call types.
Superficially similar to Green-winged Pytilia, but smaller, prefers forest rather than savanna habitat, and does not have a red tail.