The Asian Koel is a member of the cuckoo order of birds.It is a brood parasite that lays its eggs in the nests of other birds which will provide parental care until theyoung Koel is ready to fly. The host is predominantly the House Crow (Corvussplendens).

The Koel makes a variety of calls, including the distinctively loud, repetitive, high-pitched 'ku-oo' mating calls from dawn, and can sometimes be heard till night.