I have two 12-week-old Millefleur dUccles, a hen and a rooster. The hen has had some issue with her right leg sliding out from under her a bit while on the roosting pole. At 5-weeks, when I got them it was minor, but then all of a sudden after putting the two out one day in a pen to enjoy the one day of warm weather last week, her leg seemed significantly worse, steadily sliding out from underneath her and she began scooting backwards around the cage until her butt was up against something. She couldn't stand and would not stop scooting until she was up against something. I treated her with vet wrap and attached her legs together like you would with spraddle leg. She seemed to improve significantly and started getting feisty and playful. When put out for a couple of hours the other day and she seemed somewhat off but not too bad. Today I put them back out for about half a day once it warmed up enough and she would not walk around. She laid down and again by the end of the day today she is scooting around backwards again and will not stand up. Please help me!! Does it sound like something neurological? Any thoughts? What can I do?