>>2100395also to add, a quail needs 1sqft/bird to be happy. Most people say they don't like going up ramps for their nesting so I built mine all the same level. Some people say their birds go up ramps.
Pic related is my run right after I built it. I can fit 25 happy quail in here.
Chicken wire is too thick for quail. Predators such as rats and snakes can fit in that. You'll want .5" hardware cloth for at least the lower sidesif you build tall.