We have an 8 month old Dominique hen who has been laying for about a month with no problems. We noticed the other day that she had a lot of droppings stuck to her behind (she has a very fluffy behind!) and when we tried to clean her up we found the droppings had hardened and in the process of trying to remove them she now has a bit of a bald patch around her vent. Today she laid an egg, her usual size, and there was quite a bit of blood on it and we could see blood around her vent. Though when I checked her vent about a half hour later I didn't see any blood. She is acting normally - running around, perky, eating, drinking - so she seems fine other wise. Should I be concerned?