just put 16 week old with 7 week olds

[hensplease]

they get along perfect

 

[ruth]

I turn my baby chicks loose starting at 2-3 weeks old and they get along great with the over 200 other chickens, roosters, ducks, etc. and all of my birds freerange (no fences). I've never had a problem with them bothering one another when they have lots of room.