Advise PLEASE! I have 6day old chicks that are all twitching their heads. One started last night and now all are. The one that started first just pooped a runny, slightly pinkish poop. Are they sick?? Can they be sick when they are all running, playing, and eating and drinking well. Should I put more vitamins in their water. I don't know what to do because this is my first time. I am really worried! Could this be Marreks disease?