Last night around 4 am my DH heard what he described as something fighting for its life. I went and checked on the chicks and the only thing amiss was that the roo and 1 hen were off the roost and on the floor of the coop walking around. They were both fine, no blood, no missing feathers. No preds in or around the coop. We heard the noise again around 45 mins later and thought early morning chicken sex? This morning when I went to release the chicks, I found a bunch of feathers outside the coop and my poor roo with a bloody patch of missing feathers all the way around his neck, mostly at the front right over his crop. My best guess is that something was threatening the flock, the roo came to the defense of the flock, and (while successful) was injured in the process. The only injury I see is around his neck. He is walking, talking and following directions. Following treatment for his superficial wounds, he is back with the flock and free ranging. My questions is this: the roo successfully defended the flock once and is now injured and can't do it again tonight. When they go into roost, I am going to bring the roo into solitary for the night. What can I do to protect the rest of the hens in the absence of the roo? The pred didn't make it into the coop and I think that if the roo had stayed on the roost instead of becoming defensive he wouldn't have been injured. Whatever got the roo reached in and pulled feathers through the wire covering the ventilation grate on the bottom of the coop. Any thoughts?