Study the following
Crows make their nests high up on a tree using all kinds of things, even pieces of wood and wires. A clever bird who does not make its own nest lays eggs in a crow's nest. The poor crow batches them along with its own eggs, Which bird is this?

Options

A. Indian Robin
B. Barbet
C. Koel
D. Sunbird

Answer

C

Explanation

The koel is a truant parent and to ensure the survival of its kind takes on the role on a brood parasite of the crow house.