Can you see his eyes to see if they are intact? Is there gunk in the newly injured eye? Cleaning the eye with a clean wet cloth and applying some Terramycin eye ointment (or a similar ointment) 2-3 times a day after cleaning would be good. Roosters need to be kept separate or they will fight. It is always good to have a plan on what to do with extra cockerels. I stopped breeding because no one wanted my extras. The ones in the pictures appear to be a black australorp and a black copper Marans, but I am not an expert on breeds. Those are some I have had.