Poor little one it's amazing how well they can recover from such horrendous attacks. Please keep in inside until he is healed so flies don't get Into those wounds and lay eggs then you'll be dealing with maggots.
Use hardware cloth to build him and any other you get a safe predator proof run...
Use a warm saline rinse for cleaning his eyes very gently Pour the warm salty water over then apply Terramycin eye ointment it’s an antibiotic. Keep those wounds clean to ward off infection. Do you have any human antibiotics?just thinking with those wounds he might should be on one? What do you...
Most likely he is in shock so keeping him comfortable and warm is the best thing for him. Once he is through the shock have the warm water with the electrolytes and sugar and B complex and offer him some. He may begin to eat this morning too.
If you can get some pictures of his wounds? If at...