I'm getting eggs from Steve at S and S Poultry and I'm trying to plan ahead. I plan to free range the turkeys but I do want to provide a secure place for them to roost if they decide to go inside. How many sq. ft. / bird is recommended for a roosting pen? I also want to incorporate breeding pens in to this design. How many sq. ft. / bird is recommended for a breeding pen? Thanks in advance for any help!