I got a mini pen for my 4wk old chicks 2 golden Sexlinks and 1 Mille fleur d’Uccle to be on the grass. My 10wk old Rhode Island Red babies are in the coop with 10x10 run that is 6ft tall. Would it be a good idea to put the mini pen in the run? The mini pen has a lid so the little ones can't get out, and the big ones can't get in. However they'd all get a good look at each other.