I've got 4 buff orpington chickens and I've had them now for a little more than week. They are about a few months old, and I think 3 are female and 1 is a rooster. One of the females has crusty, infected looking ears. She's had the problem for perhaps a week, and I am taking her to the vet today. Her behavior is 100% normal. Has anyone encountered this before? I will follow up here after the vet visit in case I find something out that can help others.