i have a rooster and it just started limping. i dont know what happened to him because the day before it was fine and then the next day when i took him out to run around it was limping and can barely walk....can it be because i introduce a new rooster to my flock and can it be caused by them fighting or something....its been like that for 3-4 days now..will it heal by itself or is there some meds i can rub on the leg....i own OG bantams