My 4 year old RIR has excessive poop on her rear. I noticed it about three weeks ago so I cleaned her off and removed all the feathers I was able to. I kept on eye on her and it seemed to be resolved; however, Saturday we noticed she was all "gooped" up again (but not picky blockage) so I rewashed her and now she is listless and dragging. I did get her to eat some treats (bread) but her colour is dull and she is just standing in the yard instead of walking around destroying it like they normally do. I have four other chickens who are in perfect health and she has never left my yard. Please help with any advice you may have..... her backside looks like she sat in a pile of poop!