The male Koel repeats a kooo-kooooo call in search of a female, which has a comparatively more shrill sounding kik kik kik call. How often do you hear the male's call being responded to? Without any response, all the male Koel can do is to set its call on loop, hoping for a reply.

Why do cuckoos sing?

The cuckoo is a brood parasite. It is well-known for its habit of laying an egg in the nest of another bird, then leaving the offspring to be hatched and fed by 'foster parents'. ... A cuckoo chick's call can be so loud and demanding when wanting food that it can persuade birds other than its foster parent to feed it.

Why does koel sing in summer?

Here's reminiscing the koel's story, as the summer heat and the bird's calls rise to a crescendo. ... This is the mating season for the bird and its call for a mate is often agitated and rises in pitch.