I bought a roo about a month and a half ago that is about 25 weeks old now. I got him from the same breeder I got my pullets and one roo from in September. They are all very happy and laying an egg each almost everyday. But the roo I bought later seems to have something wrong with it. His legs are skinny. He sits down a lot. Even when all the other are free ranging, he sits down and watches them. Tonight I watched him fall off the roost as he tried to climb it. Any ideas as to what might be the problem? And what should I do?