Due to DEFRA Regulations in the UK all poultry at the moment has to be put in a covered area so that wild birds cannot get in, due to Avian Flu prevention. I had to put my hens and two cockerels into my polytunnel. All has been fine until today. The oldest, mature cockerel called Billy with massive spurs has been the boss and each time the younger cockerel (his son!!) Squeeky goes to mount a hen, he gets him off with minimum of force. Today I went to check on them and saw that Billy was quiet and not calling his ladies to eat the treats I'd brought them, then I noticed his head feathers were matted. After I caught him (it wasn't very difficult) I brought him inside and found that his comb, running from the back to the front of his head, was torn away from his head for half its length. There had been a lot of bleeding, hence the matted feathers. I cleaned him up the best I could using an antiseptic in water and just hoped that the wound would clot and stop bleeding. I've had to put him inside a coop on his own now inside an enclosure that is completely covered with wire, so wild birds can't get in, though if one does 'poo' from above then the wire won't stop that coming in. I will leave him until tomorrow and see how he is, and then I will have to keep him separate from the other cockerel and, in time, bring 4 of the hens in with him so he has his girls and the other cockerel can have the other 4. What should I do now though about his comb? I can't stop him from shaking his head and dislodging the partially separated comb.