My 10 month old RIR hen has something wrong with her bottom. I noticed about 5 days ago she has alot of poop on the feathers below her vent and also looks like might be losing feathers around there too. I don't see anything coming out of the vent, but I can definately see the vent since the feathers seem to be missing. She is not acting sick. Eating, pecking around, drinking and hanging out with the other girls. Not sure if she quit laying. Any ideas what might be happening?