so i just came back from vacation to find that one of my 5 month old pullet has a serious wound on the back of her head. there is dry blood on the side of her neck, and she seems pretty serious. She is in a coop with two other pullets and three young roosters because they were hatched together and iv been trying to find them a home. the wound is about the size of a quarter (ill add a pic if necessary later). She's a mixed breed but i do not know of what. Please help me help her! she doesn't seem to be in that much pain or just doesn't show it. She very shy and won't let anyone near her. Any help would be greatly appreciated!