One day I couldn't find one of my roosters at feeding time and found him hiding in the house, looking very much like yours. I thought at first he was sick/ septic but then I found the other (winner) rooster with similar but much less dramatic injuries all around the face and put two and two together. He'd been beat up and was hiding/ sulking. He didn't eat for a day or two - maybe out of shame or maybe out of pain, but he hid away from the rest of the flock for almost a week, darting out to eat when he felt safe. Eventually he came back out but kept to himself. Poor fellow!