I've tried researching this and some said they were not getting enough protein. People said to give them kitten food or other high protein food through out the week. Have tried this and still some are picking the others feathers and making them look like rats have chewed on there feathers. I've tried putting pine tar on areas of the chickens and other ointments and they still pick. Does anyone have any other ideas I can do to try to break this habbit? Thanks to everyone for all the input on my other questions! Any help is appreciated!