I have a 1 week old chick that was hatched with a splayed leg. I splinted it and he is better. But last night, he looked like quasimodo, only the hump is at the top left front of his chest. The lump is really hard. I separated him and gave him a few drops of olive oil and water and have been massaging it. He has pooped a little (gray clay like substance). The lump has not gone down and is very hard. I will try yogurt and apple cider vinegar. I am worried because the lump is so hard. What else should I do?