the hen is about 8 months old. started as a limp now can hardly stand/walk. other hens, a least two, limped, then stopped after couple of days thought it might have been my ladder board to the coop, so i put rug on board so can grip better, mainly when leaving coop. still eating. when i examine leg cant see anything odd. these are my first chickens to caretake! what is my best plan?