How do you know if a hen is being broody, or if something is wrong with her. I have one about 6 months old that wants to stay in the nest. Every time I've checked, there is no egg. She acts irritable when anybody gets close (raises neck feathers, squawks). There are some blood drippings on the edge of the nest, but I suspect that might be from pecking a hen that got too close; I did witness another hen messing with her earlier. She looks and acts healthy. I checked her rear as best I could, but didn't see anything obviously weird (to my untrained eyes). She does occasionally get out and roam. She is the friendliest hen I have who will come to me and let me pick her up, which I always reward with a little scratch (but no more than 2x/day). She's my favorite, so I'm obviously concerned about her.