I have a 14 mos old Olive egger hen. She and her sister have always had nice full beards and muffs. We had a respiratory infection run through the flock a few weeks ago and I had to resort to antibiotics in the water for everyone. Just the other day I noticed that "Whiskers" no longer has any! Probably coincidence with the antibiotic use. Also, she did not molt last fall. Could she be molting in the spring? She looks like she might be missing some feathers on her lower back near her tail. No rooster, haven't seen any mites but I can check closer when she roosts tonight. I guess my question is, can 1 chicken out of a flock of 12 molt in the spring? Can a previously bearded hen go "bald" on her face? Thanks for any advice.