I have a hen who was injuried by my now ex-roo, three/four weeks ago. She could barely walk, used her wings to steady herself, could not get on the roost or into the nest box. After five days, she began acting and looking good/normal. She didn\'t lay eggs for several days, then laid several days of soft-shell eggs, then she has been laying 4-5eggs a week since. She seems fine --other than a hint of limp in the mornings when I turn them out of their coop. During the day when I check on them she is active, no problems. She eats well, her vent is the same as all the other hens, no blood, runny poo, no breathing problems, NOTHING--BUT after she has free ranged for a few hours, she struggles to walk, she walks a few steps and sits down, she goes into the coop, I put her on the roost and the next morning, we start all over again.. On days they are not free ranged, she doesn\'t seem to have trouble.. IS she re-injuring her self? Something broken? Why does she hold her tail down like a duck, and waddle back to the coop? I am at a loss.. She laid a beautiful, prefect egg today and yesterday. There is no blood on it or poo.