I don't have a rooster, so I am certainly not an expert on this matter.
Are they mating when this happens or just fighting? Hens are not always submissive to a rooster and that can lead to domestic violence.
I do have quail cocks and they'll fight with each other and occasionally get too aggressive with a hen. Typically it's just missing feathers though, which is not a big deal. There's occasionally a wound on the head or neck, which heals on it's own. I have seen a pecked eye, which was nasty and never fully recovered, but your chicken doesn't look very bad. I imagine it will recover just fine. If the aggression continues you want want to separate this bird form the rest of your flock for a bit so it heals up.
Are they mating when this happens or just fighting? Hens are not always submissive to a rooster and that can lead to domestic violence.
I do have quail cocks and they'll fight with each other and occasionally get too aggressive with a hen. Typically it's just missing feathers though, which is not a big deal. There's occasionally a wound on the head or neck, which heals on it's own. I have seen a pecked eye, which was nasty and never fully recovered, but your chicken doesn't look very bad. I imagine it will recover just fine. If the aggression continues you want want to separate this bird form the rest of your flock for a bit so it heals up.