Today, my wife tells me that one of our BO's was acting weird. When I went out to investigate, I saw that she was inside the coop door, almost standing guard, and would get her feathers all puffy and act big at the door as other hens would approach her. Unfortunately, she's also bloodied up a lot on her head/comb area. For the last few days, she's been making an unfamiliar, odd, low-toned "cuk-cuk-cuk" sound. We have one hen that I know is the queen of the flock (we have 5 in our flock) who seems to be the one doing most of the aggressive behavior, for almost no reason. Thoughts?