Black specks and parts of comb

[Bloomporus]

Hey everyone! I wanted to know if anyone can tell me what this thing on my roos comb is. It started off as little specks of black but it’s been getting worse it seems. Can anyone tell me what it is and how I can cure it? (The second picture was taken today and the other two were taken two days ago)

 

[Wyorp Rock]

Welcome To BYC

Looks like tiny scabs. The hens may be picking at his comb a bit. It's not uncommon to see this, but I'd keep watch to make sure the hens are not picking a sore on the comb.