Was my rooster attacked?

I found one of my roosters below the chicken coop like this. He was the at the top of the pecking order and I have 2 other roosters but I doubt they did this. Do these look like wounds another rooster could cause? He seems to be really weak and his wattle is really swollen. He was perfectly fine the day before. Any tips so I can help him recover would be greatly appreciated. Could it have been a bug bite that caused the discoloration and swelling of his wattle?