Does this look like dry fowl pox to you? Two of my six girls have these small black smudges on their comb or wattles. Seemed like I could rub some spots off but not all. Around 22 weeks old. They have been healthy and happy otherwise and don't bicker much but we have had tons of mosquitos the last few weeks. All the photos of fowl pox I can find look much more severe--can they get mild cases?