Hello I have a friend moving and giving me her 10 chickens to add to my flock of 5. We are in process of completing a covered secured run that is 20x32 for outdoor yard. Current 5 are in a 10x10 barn stall and am planning to set the stall next to it as a coop extension for shared space. My question is is the outdoor run large enough for 15 birds and the two stalls at 10x10 each also big enough for 15 birds? Thanks in advance.