I have a Rhode Island Red that suddenly can't get up. I looked at her and it seems as though her legs won't hold her up very well. I put her on the ground and she was able to move forward a few inches but then sort of collapsed turned on her side. She seems otherwise alert and okay. I put her in one of the nesting boxes with food and water, but she won't last long at this rate. What could be wrong with her and is there anything we can do to get her back to normal?