I have a 2 year old rooster that seems well but I can't tell if something is not right. Something is developing on his face and around his eyes. Its swollen, yellowish, doesn't seem to be causing him any pain but he is slightly less active compared to first picture. It goes all the way down to his neck. No wheezing or coughing. Only on him. Other birds in same coop don't have these bumps. He is a new addition to the flock, btw. Please help.