Black comb, not frostbite

[Statikat]

I have 7 rhode island reds, about 3 or 4 months old. One of them has her comb turning black. It stands high and looks like a scab or like she's burned it. It's summer and we're in Texas, so it's definitely not frostbite! Anybody know what this is? I appreciate any help!

 

[ChickensAreSweet]

https://www.backyardchickens.com/a/avian-pox-how-to-treat-your-chickens-for-avian-pox

this it?


Another possibility is a pecking injury.

 

[Statikat]

It's just in one place, but it looks like it had swollen and died off? Will that happen with a pecking injury? Our rooster is older than them, but young. He's a bit..frisky. Would he do that? I have seen and stopped him from attempting to mate with them...and our dog.