I have 5 laying hens all under 1 year. Yesterday I noticed blood in the coop and found one hen with a very bloody backside. A lot of feathers are missing but I could not tell if the blood was oozing from her vent or the wound below it. She is in the dog kennel to avoid further harm. Now this morning I discovered 3 more hens that have bloody vents. 2 of them laid an egg already and they don't seam to be in any distress. My dominant hen has no issues that I can find but she keeps pecking the others but I'm out of kennels. It's 0 degrees outside so I don't think I can bathe them. If anyone can give me advice on what to do I would really appreciate it! Thanks!