I’ve got 5-3 year old and 4 - 14 1/2 week olds. They’ve been in a coop with plastic netting fencing separating them for 2 months. The bigs come thru to the littles side thru the nesting boxes because apparently the nesting boxes on their side aren’t good enough. The littles can get thru out to the run and have seemed fine there, so I’m thinking of opening up more ways for the littles to get out to the run. But I want them to have places to hide. They’re almost as big as the bigs so I’m having difficulty envisioning places they can go that the bigs cannot.