Just found one of the girls with a huge L shaped gash under her right wing. Skin is completely ripped open. There is no fowl odor or inflammation but she is lethargic. My mom sewed a hen together after a dog got it when I was little and it lived many more years but I cant remember what she did- wondering if anyone has any tips. Am going to proceed with standard first aid- she doesn't seem to have internal injuries nor is she gushing blood just a giant hole. Which antibiotic would you recommend?