i have a flock of 17 hens and 1 rooster. one of my golden comet hens, 2 years old this past august, is walking awkward. her legs at the hip seem to be bowed out, shes walking very slowly and close to the ground, comb and face is palish pink. she is eating fine, pooping fine, just seems to be in pain???. no cuts or abraisions anywhere on her body. They eat a layena crumble and are free range and get fruits, veggies, yogurt, etc. could she be deficient in something or have a disease???