See text The blue malkoha or chattering yellowbill (Ceuthmochares aereus) is a species of cuckoo in the family Cuculidae.

The blue malkoha has a greyish belly, head and throat and a heavy yellow bill but subspecies display some differences in plumage colouration.

The blue malkoha feeds primarily on insects, particularly caterpillars, beetles, grasshoppers and crickets; it will also take frogs, slugs, fruit, seeds and leaves.

Two white and creamy eggs are laid in a nest that is a rough mass of sticks suspended around 2–5 m above the ground.

The blue malkoha is an uncommon species and rarely observed due to its secretive behaviour.