Those prior pictures are of hens, here's my male - note the rusty colored chest with no dark spots :)
*edit* he also didn't get that dark face until after his fall molt!
For coturnix quail, the best egg layers and fastest growing meat - You could put them in a small coop, rabbit hutch or cage, a walk in planted aviary would be their dream! they appreciate longer than taller enclosures as they're ground birds :)
Always a good idea to add foam padding or netting...