she is bobing her head violently and i do not know what to do she is throwing up water and she has direa I think it might be frostbite because her comb is purple and the frostbite lead to an infection but it has not been cold recently so I believe if it is not frostbite she may not be getting circulation to her comb. should i kepp her away from the other chickens or not??? she is a pet and we love her very much