edit - thread title changed since we found out what is going on! We are concerned and relatively inexperienced owners of two much-loved hens, a Light Sussex and a RIR, who've been with us since 8 weeks. Yesterday evening we couldn't fail to notice that our Light Sussex had suffered some bleeding around her tail area. We have no idea how this happened although I couldn't rule out a cat attack as local cats have expressed an interest in our girls a few times in the past. I inspected her and found that a couple of her feathers had snapped near the base. I was in the process of making a noob post to ask particularly about this, but a quick googling returned the answer that these were blood feathers and that this was something we needed to be concerned about. What should we do next? Do we need to take her to a vet, or shall I attempt to remove the feathers myself? Alternatively, is there any argument for leaving them in place and allowing them to heal naturally? I have just inspected her again and there has been no further bleeding, so is the best course of action here just to avoid infection or do those feathers *have* to come out? The second part of my post is to ask are there any "natural" biological causes for this to happen, or is the only logical explanation that she was somehow the victim to some kind of physical trauma, whether that's a cat, has been pecked at by our RIR, (unlikely because we've never witnessed them exhibiting aggression towards one another in the past), or she's somehow just caught herself on something. Any advice would be very appreciated. It's nice to finally join this fantastic forum, it was an invaluable resource when we were starting out. I shouldn't have left it until something went wrong to join but I suppose you get that a lot on here!