Hello there and welcome to BYC! 
2 months old is a bit young to put in with adults. They need to grow another month yet.
You can't slip them onto the roost bar at night, adult birds are too smart for this. They know each and every member of the flock. You can't throw new birds into a flock without possible death of newbies.
What I do is keep babies in an inclosure in the run and coop at all times for several weeks. Let everyone meet each other from behind wire. 2 or 3 weeks later you can mix babies in. There will be pecking order pecking, but it shouldn't be too bad. Put out a couple more food and water stations as adults will guard and starve out new birds from one station. Everything will calm down over a few months time.
Good luck and welcome to the group!

2 months old is a bit young to put in with adults. They need to grow another month yet.
You can't slip them onto the roost bar at night, adult birds are too smart for this. They know each and every member of the flock. You can't throw new birds into a flock without possible death of newbies.
What I do is keep babies in an inclosure in the run and coop at all times for several weeks. Let everyone meet each other from behind wire. 2 or 3 weeks later you can mix babies in. There will be pecking order pecking, but it shouldn't be too bad. Put out a couple more food and water stations as adults will guard and starve out new birds from one station. Everything will calm down over a few months time.
Good luck and welcome to the group!
