Drongo bird eating skink...
About the Bird-
The black drongo (Dicrurus macrocercus) is a small Asian passerine bird of the drongo family Dicruridae.
Black drongos become active very early at dawn and roost later than many other birds. They feed mainly on insects such as grasshoppers, cicadas, termites, wasps, bees, ants, moths, beetles and dragonflies. They sometimes fly close to tree branches, attempting to disturb any insects that may be present. They congregate in fields being ploughed, picking up exposed caterpillars and beetle grubs. As many as 35 birds have been seen at such congregations. They are also attracted to fires in scrub and grasslands habitats where insects are disturbed. They appear to avoid flies.

Skink-
Eutropis carinata, the keeled Indian mabuya, many-keeled grass skink or (ambiguously) "golden skink", is a species of skink found in South Asia.
Crickets, caterpillars, beetles, and earthworms and even small vertebrates are known to be consumed by Skink