Hello all, I am very new to chickens. I got some chicken from a man who had to travel and couldn't take care of his 6 hens. 1 of them is white and I noticed her butt was not very clean and fluffy. I am not sure what is going on. I searched online and read a few things. I took some photos before and after washing her butt Do you see anything abnormal or is this hen a bit sick and what can it be? She is laying large white eggs and eggs are all clean outside. She acts healthy, eats well and all. My chicken run around half acre yard all day long so they are free range and so far I have not seen any health problems in any of them. I have a total of 13 hens and 1 rooster. This one was giving to me 2 weeks ago. All the other chicken's butts are all fine. I was told she is about 2 years old. Before pics: After bathing her: I didn't see anything unusual just a dirty butt and dirty feathers and naked areas where there is no feather. I was wondering if she is molting and this is normal but I am sure her butt shouldn't be so dirty. Her stool is a bit soft so she might have a diarrhea.