What is this?

[1cock2hens]

do they scrape off? if so then its probably just scabs from pecking

 

[Golden Brahma 64]

Fowl pox looks more like this:

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Yes and fowl pox also looks ‘more’ like this

These two chickens above ‘both’ ‘have’ FOWL POX

 

[Golden Brahma 64]

Looks like scabs from fighting to me too. If you wet your fingers and rub them, does it rub away like dried blood. Fowl pox is usually more wart like lesions from what I have seen. I'm not sure those photos you posted are typical of fowl pox. I'll see if I can find some better ones..... here we go....
https://www.google.co.uk/search?q=pictures+of+fowl+pox+in+chickens&tbm=isch&source=iu&ictx=1&fir=s2z1pK3nyRgjNM%3A%2CrhQOhivYx3hNMM%2C_&usg=AFrqEzc5jz4tL1gdKwHm-9eMxqBIhJXydw&sa=X&ved=2ahUKEwiMtYOy1d7cAhVKfMAKHW2_Af4Q9QEwB3oECAUQEg#imgrc=s2z1pK3nyRgjNM:

Welcome to BYC. It looks to me like pecking wounds which normally look jet black. Pox, on the other hand is tan to dark brown scabs from mosquitoes spreading the virus.

Fowl pox looks more like this:

View attachment 1497556

Who would he of been fighting with ? He’s the only rooster in the flock, as the OP stated.

 

[lazy gardener]

It's not at all uncommon for a roo to duke it out with one or more hens, especially the alpha hen if she's a bit too uppity for his liking.

 

[Golden Brahma 64]

It's not at all uncommon for a roo to duke it out with one or more hens, especially the alpha hen if she's a bit too uppity for his liking.

Very unlikely, unless the rooster is new or is ‘too’ young.
In all my 15 years of chicken keeping that has only ever happened when introducing a new rooster into the flock.

 

[RoostersAreAwesome]

Those are scabs from the hens beating up on the rooster. If it continues, you might want to remove him from the flock and let him mature some more before putting him back in.

 

[Golden Brahma 64]

Those are scabs from the hens beating up on the rooster. If it continues, you might want to remove him from the flock and let him mature some more before putting him back in.

Oh are they ? Have you been there to witness the hens ‘battling’ this rooster ?

 

[Golden Brahma 64]

From a person that has raised hens for 15 years and is training to be a small pet vet. From my point of view that Is fowl pox. I have seen it and I have helped others out with it.

I highly doubt the hens ‘beat up’ this rooster. The OP has never stated the age of this rooster or when they got this rooster. I don’t see how you can just assume that the hens are beating up this rooster wothout witnessing it. If the OP had witnissed this behavior I am sure they would of stated that in their post but they did not!

 

[Kiki]

does anybody know what this is on my little guy? It just suddenly appeared. If you know what it is is it treatable?
He is the only rooster, he is a bantam and there are 8 hens. It is Summer here so not frostbite...
Thanks in advance!

Welcome to BYC.
First see if it washes off... recently someone had a bird that looked exactly like this and it was nothing more than dirt.

 

[Eggcessive]

Those black marks, which sometimes are from pecking, can also occur from injuries on fencing, but since he has some small singular marks, they are more likely peck wounds.