Well,next time please do not say the cats"head is flattened"and blood all over,I had this horrific picture in my head.
The argument about"barn-cats"is an old and lengthy one on this Forum,we hold different views,to me every cats life is precious(sp?)even if I had 200
and if one was severely wounded,he would be taken to a vet.
I think you would do well,to keep this kitten inside for a while,at least until he is 100%,respiratory infections can carry from cat to cat.....but I guess it does not matter,they are only barncats,right?
Anyway,good luck to the little one!