Years ago when we were breeding Birds of prey we had the quail in a 3 tier battery type system, Youngsters in the top, layers in the middle and those ready for the freezer in the bottom, along with a 100 egg incubator, they hatched in around 18 days then transfer to a brooder it was some set up, always found if you kept them in a normal Avery they would fly up and scalp themselves on the roof. They are the fastest breeding bird in the world,