I have a 7 chickens, one's name is china and it can't stand up. she tips over easily and can't balance very well. its legs are crossed over each other and they cross back together after i straighten them out. she's almost 2 months old, and she's been like this for two weeks. she broke her leg 4 weeks ago but got better, but now she's like this. please tell me how to fix her legs so she can join her brethren in their new home we built for them in the backyard!!!