Our Rhode Island White has been missing the feathers on her abdomen for about a month.
-Skin is red and smells
-Not responding to antibiotics after 1.5 weeks
-Bathing / ointments do not seem to help
-She still lays every day and behavior is normal
-No sign of mites, all other chickens in flock are fine
Here's a photo. Anybody have some good ideas for us?