Ok so I'm new to the chicken keeping but I've had my babies since birth they are excited to see me when I go to the coop. Well one hen I particularly like, pollo, has suddenly started acting aggressively towards me. This is not normal for her, she is usually very sweet and gentle but today, she decided to bite my ear my leg my side, my leg has two nice little holes in it she somehow managed through my JEANS. None of my hens have started laying yet they are just going on five months now I have two roosters.. Who have taught her to crow and she has started dancing around the other hens. I've tried "pecking" back but that only seems to get her more riled! She's out for blood and I'm nervous she's going to hurt someone is they come over... Please help me!!