This morning I went out to do my chicken chores and I noticed that a couple of my hens had small scabs on their combs - and two of the girls had significantly more than the others. One girl looked like she had a scrape and the other had scabs on the tip of her comb. They have had these scabs before - the first time I saw this I thought it might be frostbite (but finally determined that they were more likely small pecking wounds.)
When I opened the nesting box lid I was horrified to find blood scattered all over the ceiling and walls of all three of the nesting boxes. It was like a crime scene. But no blood anywhere else in the coop and not much on the actual nesting pads either.
I inspected them all (or the ones I could catch) and they are all behaving like normal - eating, taking dust baths together, and no one is acting injured in any way.
Could two of them gotten into a fight during the night or early morning? They observe the pecking order like normal - but I have never witnessed any really severe bullying. It was almost like one was trapped in the nesting boxes while one or more of the others attacked it.