One of my quail's babies cannot walk upright. She has her chest to the floor and pushes with her legs to drag herself across the floor. I noticed one of her legs is a bit purple and swollen, not sure if that's why she can't walk. I'm not sure how this happened, all her siblings run after mommy and daddy just fine - with the occasional fumbling over one another - so I don't know what to treat her for. Let me know if you need pictures to help solve the problem. Thanks in advance for all help!