I have 4 2 year olds and 4 6 1/2 week pullets. I have been letting the little girls (aka the tributes as my kids call them.....yes, a reference from The Hunger Games) go out into the yard in an xpen that my dogs don't use, but I'm wondering if it is ok to let them completely free range in our fenced in back yard with the ladies and should I clip their wings first so they can't fly out of the yard? Also, how instinctive are they at this age for either being "herded" back to their pen or returning on their own?