I purchase 15 standard bronze turkey chicks about 2 1/2 months ago. I didn't have a problem with them while they were young, but now they are starting to die off. I have lost 5 in the last 2 weeks, 3 of those in the last 4 days! They all seem to be healthy. All but one died overnight. I saw the one that died during the day. It almost seemed like it had some kind of neurological problem. It was flopping and flailing around, its neck was swaying as if it had no muscle control, then it died within 20 or so minutes. The turkeys do run with my ducks and chickens. Could it be something passed on from the other poultry, or did I buy chicks that were already were diseased?