Good evening........We have 25, 20 week old chicks (pullets), and they are starting to "lay". First 1, then 3, and today there were 9, but we noticed one of the Road Island Reds, had blood on her back side. There does not seem to be anything like "prolapse", we think that maybe (hopefully), she had trouble with her first egg, then all the other girls noticed "something different" about her and started pecking her around the vent. She doesn't seem to be in any pain, but she keeps "flexing" that area. We put her in a separate coop for now, until we can find out whats wrong. Thank you for any suggestions..................Don