I tried a while back to get some responses to this post but no luck so I'm trying again. My RIR hen has had this spot since she was very young. She is now about 20 weeks old and has never shown any other signs of being sick or different from the other hens. Her energy level, appetite, etc. are great. I contacted the board of health and spoke with a vet who really had no explaination. I even treated it with anti-fungal cream for a few days just for the heck of it to see if there would be a change, and there was not. Anybody out there have an idea? Thanks.