Baby Wood Pigeon seems to have a hole in it's crop

A couple of days ago a baby Wood Pigeon fell from the nest in one of our trees in the garden. The baby has feathers but still has some yellow fluff around the head and wings. There was an adult Wood Pigeon along side it and it looked as though the baby was being attacked by the adult. We caught the baby and put it back in the nest and it stayed there for a whole day, then last evening dropped out of the nest again. We caught the baby again and put it in a box with shredded paper in the shed and I fed it some Readybrek made with warm water by feeding syringe and continued with it this morning every two hours and the baby looks brighter and seems to have more energy and has done a couple of poos. When I was feeding it this morning though it looked as if some of the Readybrek was leaking from it's crop and on closer examination it looks as if there is a whole in the crop. I presume this was done at the time of the attack by the adult Wood Pigeon. Will this heal or is the poor baby doomed?