My well-Bonded Roosters are fighting!!

[Horserider77364]

I have these 2 roosters that have been bonded since they met, one is a serama that is 2 years and one I don't know the breed but he is huge and he's 1 year old.
They have never fought each other and are bonded really well! But I came home and looked in my chicken coop and saw them fighting, I broke them up and separated them.I don't know much about rooster fights so can someone please tell me why they could have been fighting and also should I worry about the bleeding on my serama(bleeding on his comb and chest area)

 

[MarkJr]

Just two males?

How old? Is there females around?

 

[Folly's place]

Roosters can decide one day that it's just over, and in a confined space especially, one or both can die.
Are they both tiny, or is the black bird a lot bigger? Multiple feeding stations available? Places in the coop to be out of sight?
Separation, maybe permanently, may be your best choice here.
Mary

 

[Folly's place]

Generally comb injuries look grim, bleed a fair amount, and heal up just fine. If there's a funny tag, cut it off. Otherwise, if his eye is okay, that's good news.
Mary

 

[Horserider77364]

Roosters can decide one day that it's just over, and in a confined space especially, one or both can die.
Are they both tiny, or is the black bird a lot bigger? Multiple feeding stations available? Places in the coop to be out of sight?
Separation, maybe permanently, may be your best choice here.
Mary

Yes,your probably right I might have to keep them separated or now on,and yes the black one is way much bigger than the minature rooster