I have never encountered this before and I can't find a whole lot of info on it either. I have a naked neck chick that suddenly developed swollen ears. The best way to try to describe it is they kind of look like a doughnut with a black center. I could not see that there was drainage or anything from it. I did not notice the ears swollen yesterday. It seems to be eating, drinking and running around fine. The swelling are very firm to touch. I put antibiotic ointment on it and tucked the chick back in under it Momma for the night. I will try to get some pictures of it tomorrow. Has anyone ever seen this before?