Put up a new roost for her away from the other chickens. When it is dark and she is on the poop perch move her to the new one. Do this every night until she gets used to sleeping there and she will go to that perch everyday on her own and be a clean bird.My silkie has got some poop on and matted into her feathers this has happened before alot and not that long ago I gave her a bath to get it all out. I cant keep giving her baths so how should I deal with this? She sleeps on the bottom roost while everyone sleeps on the top so I know how she gets pooped on. I cant put her up on the top bc then they'll pick on her plus she likes to sleep by the window which is the bottom roost