My rooster for the last little bit has been walking really slow, but the last week or so I noticed that he is walking really stiff legged and almost putting one foot in front of the other, moving really slow like he may be in pain. He does feel like he may have lost a bit of weight, but he looks good, he has a really red comb & wattles. He is eating & drinking, crowing, and still do his roosterly duties . He sits around alot, he will take a few steps and then lay down for long periods at a time. He also has not roosted on the roost for quite a long time. The girls have picked on him quite a bit, they pick at his comb or wattle, so I chalked him not roosting up to being low on the pecking order. I have checked his legs and feet, nothing seems to be wrong. I just don't know what the deal is. Does anyone have any ideas what may be wrong with him?