One of my 19 week old leghorn pullets did a moon walk yesterday. She was taking a dust bath and another pullet got on her back, my leghorn jumped up and then tucked her head and started moonwalking backwards. Then would go forward normally than repeat the head tucked moonwalk. I picked her up checked her she seemed fine, I put her down and all was normal. Is something wrong ? Today she has been normal. It has been hot here, but I have a swamper in the coop, change their outside and inside water 3-4 times a day. The girls are just beginning to lay..... any suggestions or info. Is it neurological or is it normal ?