What is brood parasitism? Explain with the help of an example.

(N/A) Brood parasitism is a type of parasitism in which a parasitic bird lays its eggs in the nest of a host bird,allowing the host to incubate and raise the parasitic offspring.
$\Rightarrow$ Example: The common cuckoo ($Cuculus$ $canorus$) is a classic example of a brood parasite. It lays its eggs in the nest of a crow ($Corvus$ $splendens$).
$\Rightarrow$ During the course of evolution,the eggs of the parasitic bird have evolved to resemble the host's eggs in size and color. This adaptation reduces the chances of the host bird detecting the foreign eggs and ejecting them from the nest.