I noticed this today. He is about 4 months old. I did look in the ear and it had some crusty stuff in there I got as much out as I could. I dropped peroxide in and it's hard to the touch. Any ideas what it is and anything more I should do?
I can't tell. I have another rooster who is a different breed and he is the top rooster. I only have 10 chickens. This one makes a noise that's not quite a crow. It's about 5 months old now.