I have 10 seven week old buff orpingtons that are outside now in the big coop but still inside a large wire dog crate. I also have 4 grown hens, (orpingtons also). The old girls really don't show much interest in the babies except to check on the food that falls out of their cage. I can't remember how old they should be to mix. The babies are getting to big to be left in the crate, should I experiment? I don't want anyone to get hurt but the hens are old ladies and there are only 4 of them to the 10 pullets. If they were any other type of chicken I would be really worried but orpingtons are so mild mannered usually. Maybe I will put wire up and make a bigger space in one corner for the babies. What do y'all think?