I wanted to re post this with more detail. I have a game hen who is 18 weeks old. Going on two weeks ago she began stumbling in the yard and falling over. There are no signs of injury. We separated her from the rest of the chickens, and within a day she couldn't walk at all, she kind of hops around on her stomach and her legs are mostly pointed backwards . she can move her wings a little bit and hold her head up good. Her rear is caked in poop but I'm not sure if its just because she cant stand to keep clean doesn't seem to be diarrhea from what i can tell and no discoloration. She wasn't eating very well that we could tell and she would drink if we put her beak in the water. My husband bought this stuff from tractor supply cant remember the name of it but it is a powder you can sprinkle in the chicken coop on the chicken and in their food that is supposed to get rid of worms ticks lice and etc. Two days later we purchased some duryramicin antibiotic and put it in her water. The next day went to check on her and still no change in movement but she drink and ate very well today. Just wish i knew what was wrong, and what to do and if she will walk again. Thank you to those who replied before any info is much appreciated.