Answer:
Brood parasitism is the phenomenon in which
an organism (parasite) lays eggs on the nest of other organism (host).e.g.,
Cuckoo (koel) bird lays its eggs in the nest of its host and lets the host
incubate them.
The
eggs of the parasitic bird resemble the host's egg in size and colour to reduce
the chances of the host bird detecting the foreign eggs and ejecting them from
the nest.
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