My baby chick is going on 2 months. she is 1 out of 10, they all came together happy playing running around like babies do. the other day my Barred Plymouth Rock was limping so I thought she must have landed on her foot wrong with one of her flying jumps, but this is now day 4 since she was only limping, and now she walks a few steps and falls on her butt. she's eating, drinking and very alert, she wants to be running around with her sisters, when I had her outside with them yesterday, but because we also have bigger girls, I brought her inside, because I know in the bird life if your hurt, there going to peck you to death! she wants to run, but doe not make it far at all. when I pick her up, she kicks her feet so I know there not broken. what makes me sad is she was the first one to come running to us, and everyone else followed, so she had crazy energy! any ideas what's going on???