Aloha, Thank you so much for helping him. I found my rooster hit on the road, had been dragged by a car, and was pretty badly wounded. I would say Spike needs a broad spectrum antibiotic from the vet, that is administered orally. I am not sure the amounts in the food or water - the concentration that is - will be high enough. I am a microbiologist, so its good to take care of puncture wounds as fast as possible, with stronger antibiotics. If you can and have a bird vet who would help you, it might be good to take him. Bathing is good too, at least his wounds, salt water would help to kill bug larvae, microbes, and help the healing process. I gave Mr. Rooster a salt water bath to get rid of his bird lice - there is a "recipe" online as a natural remedy for bird lice. If you just did the salt water part of the bath that would be good. They are very good at cleaning wounds too on their own. I don't know how bad his injured leg is, but if its bad, you can wrap him snugly in a towel and put him in a carrier/cage with a towel over it to keep it dark - this will discourage him walking on it, if you think he needs to let it rest for a few days. The vet could also give you a bit of mild pain killer, which can help him heal, if its given to him for say 2-3 days, just to help him get over the hurdle. We gave Mr. Rooster a little bit of pain medicine at night for about week, and he could not walk at all, had road burns, etc. And, I think a bit of time outside each day to see the girls is especially helpful, and most of all, if you let him know that he is in a loving environment, he will fight to live now.

And, he will likely be your best friend for the rest of his life. My guy is, and he has always trusted me. Hope some of that might be useful. My vet only charged me 25 dollars because it was rescue. She loves chickens.