Hey everyone. OK as of right now i have 2 hens and a chick-n-hutch coop. I have been letting the chicks free range for about 5 hours a day in my fenced in back yard. Well my dog goes out there to and it is getting hard to let them both have their time outside. Well the other day at work i was around back and saw a lean to. It is about 10x10 or so. I am going to get that and put on the back of my shed and attach chicken wire on the outside, and their coop will be on the inside. My question is how many chickens can i get with the coop and run i will have. The coop is about 15 sqft. Also just wondering what I need to put on the ground inside the run, it will be covered, it has clear corrigated tin on top, Thanks and have a great day.