Definitions for "Nestling"
A young bird which has not abandoned the nest.
Newly hatched; being yet in the nest.
A young bird still confined to the nest. Hatchlings are nestlings which have just emerged from their eggs, and fledglings are nestlings which have acquired juvinile plumage and have - or are in the process of - leaving the nest.
Keywords:  receptacle
A nest; a receptacle.