If the babies have already hatched, really the only thing you can do is wait for them to grow up and fly away. Don’t worry — baby pigeons grow up very quickly! The time between when they hatch from the egg to when they fly away from their nest is usually less than 4 weeks. Once they leave, the babies don’t come back to the nest again.The parents may try to start ANOTHER nest in the same spot, even before the first babies have grown up and flown off. Read on to find out how to keep them from nesting on your balcony in the future.No. Pigeons are very location-specific when it COMES to their nest site. Moving the nest over even a few feet — say to a neighbouring balcony — can cause the parents to abandon the nest.Baby pigeons NEED their parents — they cannot survive without them. Their parents feed them, keep them warm, and even after they’ve left the nest mom and DAD SHOW them how to fly, escape from predators, and integrate with the flock.If you take the babies off of your balcony and move them, even if it’s to a “nice” spot like the local park, they will die. The best thing to do is to let the parents raise this one set of babies. It will take less than a month, they grow up so fast. Once the babies have flown away, you can prevent the pigeons from nesting again in the future.