I saw her out ranging with the others and she looked fine only an hour ago. I just came back from shutting the coop door for the evening and found her laying in the bedding material below the roost. I picked her up to get a better look at her and she is turning her head and neck like a corkscrew and her body tries to turn and roll with it. If there is room to roll, she goes over. Her eyes are bright and she just blinks and looks a little scared and confused. She is not breathing hard or anything like that. Other than twisting, she appears otherwise normal as far as I can tell. I've never seen or heard of anything like this before. It's like her equilibrium is off? I felt her crop to see if maybe she was impacted, but it seems normal. The other girls seem fine, up on the roost. She is also the low chicken on the totem pole, so I checked to see if maybe she had been injured, but there are no obvious injuries. She had to have been ok a little bit before to have made it up the ramp into the coop. What on earth could this be and is there anything I can do for her?