Intraspecific Brood Parasitism in Birds and Insects explained.

Many species of birds and insects engage in intraspecific brood parasitism (IBP), when a female lays eggs in the nest of a conspecific and leaves without providing parental care. These visiting females may also act to cooperate with a primary female, staying to provide parental care. Therefore, IBP and cooperative breeding can be considered extremes on a continuum of parental care provided by a secondary female. When a secondary female abandons a nest, she creates an asymmetry in parental care between herself and the host.

conspecific = (taxonomy) relating to the same species

You will have seen brood parasitism mentioned in some of the insect information accompanying photos I post

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