There is a general problem, with animals raised in captivity, that, as infants, they don't see or experience feeding behaviours.
For this reason, people who rescue birds, or raise juveniles in captivity, minimise human to bird interactions, and feed the juveniles via glove puppets, while mimicking the sounds and behaviour of parent birds.
Here's an example:
https://www.youtube.com/watch?v=L4S0zTwMFEM
I think this was mentioned in the Jurasic Park stories (not sure if it made it into the movies) but it would be an issue for the dinosaurs successfully reproducing.
(i.e. they wouldn't have experienced any nest building behaviours, nor feeding of the young etc. so most likely result of laying an egg, is that the parent just walks away and abandons it.)