Please somebody explain to me the proper quartine procedure. I have ordered 10 japanese BTW hens to go with my 2 roos. I bought them from a very reputible seller/breeder. However, I don't want to loose any of my flock. I will have to put them in an area where I have housed other chickens before. IS that ok? How long do I keep them quartined? Should I be giving them any supplements?