I built a simple chicken pen for my birds by building a large wooden frame that I made sure I braced well. Then I took chicken wire and a staple gun and stapled the wire to the boards of the frame. This is at least a two person job because you need help to make sure that the wire has been stretched tight so you won’t have gaps. I don’t clip the wings of my chickens, so I had to stretch wire across the top of the cage as well. Be sure to frame out a door. I made my door using an old bi-folding door.