Ohhh, Boy! What kind of pigeons do you have? Like I would know the difference.
The lady at the Humane Society says that this happens all the time. She'll be getting orphan pigeons all summer! I understand they are really sweet when they get grown and usually don't leave even if they are released.
My son, (who is on their call list-and lives with me again) thinks that when they can walk and have feathers that we can put them with the small chicks. I have one broody due to hatch the first of the week, and some 3 1/2 and 4 1/2 week old chicks I am letting out to range during the day now. Have you tried mixing them in like that?
Right now they are just skin, down and pinfeathers. They are using their legs better but not standing at all. They eat, sleep, and poop. Which is good.