Well as to button quail, quail in general are considered game birds, plus quail were mentioned in the notice that went out. That's why I posted my initial question. The jump was made by statements here that seemed to indicate that if you are in a mandatory euthanization zone, all birds must be euthanized. I would be very happy to know I misunderstood that (even though at the moment I'm not in one of the mandatory euthanization zones).
Even if it is just limited to chickens, though, I still strongly disagree with euthanizing a healthy bird, a family pet that hasn't been kept with a flock and more than likely hasn't been exposed. I'm all for testing, I'm all for restrictions on selling birds, I'm all for euthanizing birds that are already sick, have been or have a high probability of having been exposed to sick birds or test positive for the disease. Its the "kill 'em all" approach I have a problem with.