Two month old BO will not eat or drink. She just started walking around with her feathers fluffed out and hunkering up like she was cold. She always has access to a heat lamp and chick starter and water. I've tried Poly Visol vitamins, Gatorade, hard boiled egg, cooked oats. She also ate a bite or two of grass this morning but does not really eat but a bite. She did eat two bites or canned kernel corn today. She is getting more and more anti social wanting to stand alone. I've held her for hours at a time trying to sway her to perkup with no luck. Sometimes the other 16 chicks will stand around her for warmth and comfort. I don't know what else to try. She doesn't seem to care if she eats or not any at all. Any help will be greatly appreciated.