I have been doing all kinds of research and most places say that the run needs to allow for approx 10sqft per bird. My confusion comes in when the premade runs that you can buy (even from the hatcheries that say you need 10sqft) only allow for half that amount of space (if you are lucky), example saw a run for up to 8 birds that was 5x6=30sqft allowing only 3.75sqft per bird if you have 8 in there. Based on that, I have enough room already set out, 64sqft for 15 birds. I think it will be a bit cramped and want to expand it but not sure how much more space I need to add. I dont have room for a 10x15 run so I am not sure how to make sure they have enough room.