They're usually out of the nest and pestering their parents for free meals within roughly two weeks of hatching. When they hatch, they're about the size of... um... a largish jelly bean, and they grow very fast (doves are excellent, diligent parents). Within three or four days, their eyes are open. Within a week, pin feathers are coming in and they're looking around. Within a few more days, they're sitting on the side of the nest box. After that, they're climbing around and soon are getting up on the perches to beg for food (If George could talk, I think he'd spend a lot of time yelling, "It's right there in the blasted feeder, you little dink!"). After a few days of that, I usually give the babies to a friend of ours who raises doves, so they won't drive George bananas.
(I recently found that besides popcorn and greens, George loves grapes. I have to break the grapes into tiny pieces, but he was delighted with that treat)
The modified parrot cage where George and Irene live really isn't big enough for more than two doves. More than two doves in a cage can stress them out and they start picking feathers off each other. Unattractive, to say the least.
The second egg was indeed a dud. I tossed it, so they could concentrate entirely on the hatchling.
Vice does not change its character by becoming fashionable.