The area is 5'x8' and it will be their daytime pen. It is going to have a 2' deep pre-made fish pond that will have a drain and a stop valve on the outside of the pen. The ground is going to be covered in sand. The left is the proposed addition and the right is the chicken run. There is a human door, and a small door that attaches to the run. Any suggestions or needed additions would be helpful.