@Eggcessive
You'll get better replies from someone other than me soon, but I'd get some saline ready to rinse the wound and try to get a good look at it. If you can get photos of the injury it will help the folks here assess him along with you to make sure you get the best advice! If you have plain antibiotic ointment (no painkiller) that may be recommended after the rinsing, as well, to help with preventing infection.
Is he still active/following the hens pretty normally? If he becomes lethargic he might require treatment for shock but that doesn't sound to be the case right now.
You must be proud of your boy. I hope he heals quickly!