My 22 week old Ancona roo Mr The Conductor has started to have darkened tips on his comb. He seems perfectly fine otherwise, behaving normally. We have feather mites and live that we're treating right now (kind of bummed, I keep my coop super clean and pressure wash it fortnightly but I know that this sometimes happens) and I'm wondering if that could be it. He's also due for a worming which I'm just about to do right now. Could this be the mites? I prefer to err on the side of paranoia. XD The photo makes it look quite black but to the eye it's more of a purplish red.