I was sent this picture of a little Splash Silkie aproximatly 4 1/2 months old. She did not notice any thing untill Monday, She noticed the Silkie was by herself in the coop, she picked her up and found this problem with her bottom. I had her rinse it off and apply antibiotic ointment to the red area and told her to put her in a dark room in the house to rest for the night. She gave her the little buff to keep her company. Jenn - IS HOPING YOU ALL CAN TELL HER WHAT THE PROBLEM MAY BE. AND WHAT OTHER TREATMENT SHE SHOULD GIVE HER IN THE MORNING/TUESDAY. I am going to email her the link to this post. This was them about a month ago.