Hello everyone. My user name is "Raderby Ranchin" as in "Rather be Ranching" then living and working in the city. I've lived in cities all my life but I'm slowing making my way to country living. I've recently started a backyard flock. I have two Australorps and one each of a Barred Rock, Buff Orpington, Ameraucana, and a Brahma. They are 9 weeks old. I built them a coop out of "reclaimed wood." They need more space, so here are my questions. 1. The setup I built is a coop over a pen/run. I am using hay on top of dirt for flooring and find it easy to clean, will this cause them to lay eggs of the floor? 2. Since I must build a bigger run I was planning on turning the existing coop into a nesting area and build a new coop. Can I enclose the top and four sides where the roost will be and leave the new coop bottomless? Since the new coop will be over cement, cleaning would be that much easier. Just hosing it down. 3. I've read they like dust baths. Should I replace hay with sand for flooring in the old pen/run or leave as is and use a wooden crate or trough filled with sand on the cement side?