I have two hens a BO and a Light Brahma. The BO went bald last fall and I couldn't figure out why. This summer the same thing started happening to my Light Brahma hen (who is also almost blind). The BO grew into it and doesn't look quite as ugly anymore but the Brahma looks awful. What could have caused this and will their feathers ever come back.
The BO:

The Brahma:

The BO:
The Brahma: