What can i feed this babay pigeon?

the pigeon laid two eggs in my flower pot which was kept on the window bars and the babaies also hatched but 4 days ago a group of crow attacked their nest and took one babay pigeon when i reached there hearing noises there where 3 crows sitting near the nest and the parents of the pigeon where not there so i shoo the crows away and took in the babay pigeon but their parents did not return after sometime i kept the babay pigeon in its nest and wated till the evebing but the pigeons did not return and it was getting cold and it was raining outside so i took the babay pigeon and kept it in a box and i fed it the seeds which i give to my lovebirds i give it 5 times a day since 3 days and i give it water with syringe and it cries when it is hungry and it is 16 days old now so is it ok to ive it only seeds or should i feed it something else olease help sorry for the long writing