I was running late tonight when I closed the chickens up for the night. I noticed that the rooster has a red butt, scaly looking...almost like a bad diaper rash. Could it be that he is getting too much "leftovers"? I changed the entire flock over to growers feed while the chicks were growing up, so possibly a lack of calcium (they still get lots and lots of egg shells because the chicks don't want them.) If anyone has any ideas, I'd appreciate the advice. He is eating, mating and otherwise acting perfectly normal. I've read a lot on her about hens with red butts, but couldn't find anything about roosters. Thanks in advance for the help! If needed, I can try to get some pictures tomorrow night after they go to bed.