I have a similar design and 4 chickens fit great, I think it would even take 6. Mine also free range during the day. My big difference it the open air part of my coop does not have a roof. I cannot seem to find the same style wood that they used for the coop part. It is just like the all the kit coops you see so someone has to make it.... Can anyone help.? I am explaining it to lumber yards as 3 in beveled siding. Any suggestions? Thanks.