Question

Relationship exhibited by a cuckoo laying its eggs in crow's nest is :-

Answer 1

The relationship by a cuckoo laying eggs in a crow's nest is a type of parasitic relationship. In such relationship one species is benefited by harming the other. The chicks of cuckoo compete with the crow chicks for food.

Answer 2

The relationship exhibited by a cuckoo laying its eggs in a crow's nest is parasitic.

Cuckoos usually lay their eggs in the nests of other birds like crows.

In a parasitic relationship, one species is benefitted and the other one is harmed somehow.
But studies reveal that some cuckoo birds are not harmful for their hosts.