spots on comb- anyone know what this is?

[lcatty]

Mites? Fungus? What to do?

This is actually a roo I gave my neighbor, but I noticed this on my chickens' combs, as well. Also, his hens are getting strange patches with missing feathers/sores- see below. My chickens do not have the missing feathers.

 

[En Plein Air Farms]

fowl pox?
https://www.backyardchickens.com/a/common-comb-problems

 

[lcatty]

maybe it is fowl pox- it is dry, chickens don't seem sick. Pox is viral, supposed to clear up on its own in 4-5 weeks.

I have no idea why feathers missing on neighbor's chickens, though.