My son thinks the gray & black dots/spots are new on this roosters wattles & comb. He noticed them a few days ago and is convinced this is fowl pox. He is a comet x RIR. Do these spots look like trouble? What do I do if so? Also, some of our chickens have brown down the front of their legs. I don't know what is causing it. It's only on some of the birds. Here are the legs of the same rooster pictured above. Some of the scales look like they are flaking in the centers. Advice much appreciated.