Hi all, my Congo African Grey named Woodstock is having an unusual feather issues around his neck. He is 10 years old. I have never seen this before, has always been healthy, never plucked and well loved with no changes in environment or diet. I noticed this as of a few days ago and seemed to have gradually gotten to this point. His behavior is not unusual, he is talkative and mobile as usual.
Can anyone identify what is going on with him?