The orange almost scabby crusty thing is on quite a few of my Orpington chicks but not any of my adults. They are in there own coop, perch at night, go outside in the pen during the day, and were hatched out from an NPIP flock. They are eating chick grower/finisher out of a hanging feeder. Is this something to be concerned about? Or is it just from them eating out of there feeder and irritating there skin? Any ideas? They are all running around and acting normal otherwise. No sneezing, no lameness, no scabs elsewhere but the face, and all eating very well.