I have a group of CX meat birds that are supposed to be butchered on Saturday. Tuesday they started making weird sounds but I didn't think anything of it. I thought they were just getting their "big chicken clucks" and growing out of their cheeps. Now they are coughing and I lost two that started wheezing right before they died. There is no nasal or eye discharge and their poop is completely normal and so is their eating/drinking habits. Can I still eat them with this strange illness or should I not? They are averaging 8 pounds live weight and I cannot keep them any longer. The only thing I can think of is that their breast meat is constricting their airways.