
Yes i agree with what is being said about scratch grains. i feed them to my flock along with a diet of feed for poultry the scratch grains are only a treat.
If I was you I would get some Blue Kote it is the best stuff for hiding wounds especially if there is blood it will keep the chickens from pecking and will help to heal.
Pick up some Rooster Booster "Poultry Cell" also it will help through molt and beyond.
Here is Blue Kote
https://www.walmart.com/ip/Dr-Naylor-Blu-Kote-Veterinary-Antiseptic-Spray-for-Animals-5-oz/26501787 i like the one with the dauber instead of the spray since what ever it hits will be purple. So I use the dauber .i can control where it goes easier.