I ordered 25 chicks from Meyer, and they arrived on Wed. One of my white broilers was DOA. Now, yesterday one of my BO suddenly died and just now I found one of my broilers dead suddenly. I check on my chicks frequently, and both of them seemed fine not long before I found them dead. What is going on? They all have fresh water, plenty of medicated starter feed, and I change their bedding every 2 days. I don't understand what I'm doing wrong.