I have 20 birds that I need to harvest. I've lost several in the last few days. After some research, I think it is because I was free-feeding them and they have way overeaten with too much protein. They are about 6 weeks, but when I compare them to my neighbors from the same order, they are about twice as big. He said they are bigger than his when he harvests at 7-9 weeks. Anyway, I thought maybe something else is going on. So I want to know how to tell if they are safe to eat. How do I know they don't have some sort of disease that could make us sick when we eat them? Thanks!