We have a jersey giant pullet that is 5-6 weeks old and recently moved from the brooder in the basement to the coop with heat lamps. Everyone was doing very well, until now. One Jersey Giant is tucking her head to her breast and now is walking backwards. Everyone else is fine. Could it be an equilibrium issues, could she have tried to fly and hit her head and has a concussion, or are we looking at an illness of sorts. There are no other symptoms of illness and this started this morning. I did notice yesterday she seemed to lay around a little more than the others, but not excessively. THanks!