My rooster has these little black spots on his comb and a few on his wattle. Out of the 3 roos he has the most, another only has a few and the other has none. They don't appear to be painful, or parasites. It's like the actual texture bumps of his comb have just turned black. I don't know of anything he could have gotten into. Any advice please. And yes this is my first flock so I might be missing something lol.