Our turkeys were active eating and drinking and seemed content. An hour later, one is dead and two others went down an hour later. They were about five days old. They were in the same brooder as our chicks and about the same age. They all seemed to get along fine. The brooder was sanitized, the food was fresh medicated starter. We've never seen anything kill a bird so quickly. Does anyone have any idea what the heck could be causing this. We have one turkey chick left at the moment.