We recently decided to raise Coturnix Quail and needed a place to raise them. Our screened in porch under our deck offers protection from animals and weather. The goal was to build pens that looked nice to visitors and were easy to maintain.
The pen floors slope toward the front allowing eggs to roll to the egg tray located outside the pens. The PVC troughs sit on the egg tray front rail and provide feed and water for each level.
The first tenants occupy the top floor and are happy.