About a week ago one of my chicks ( born 8/22) started walking as if the ground is on fire. She appears to be walking on her own feet. She uses her wings to "run" but often and most always laying down. She eats and drinks , and I hold her and pet her . But do not know if she has a birth defect We didnt notice when she was very small.... or she injured herself just do not know. My flock lives in a large chicken pen with a roof and alot of room and play things... I let them out a few times a day while I watch them , never out of my sight.. I am concerned.