I have to disagree with the above, all viruses, diseses, ect. that I know of that affect chickens will affect any gallifourm (quail, pheasant, chickens, and turkeys) some will affect anything that breathes. No quail has the immunity that chickens have. The danger of keeping quail with chickens is that chickens can carry their whole life and never show it but, if quail of any kind are kept with carrier chickens, they won't be for long because it will most likely wipe them out in a couple weeks. Quail will show signs of whatever they have, so you know if they're sick. That is the big gamble/debate, you don't know if your chickens are carriers and if so of what. I hope that helps.