In addition to the treadle feeder, here are a couple more ideas for feeders:
http://ploughandstarsproject.com/lazy-chicken-farmer-101/ (feed catcher is about 1/2 way down)
https://sustainablelivingcenteroregon.com/2016/03/01/diy-chicken-feeders-with-no-waste/
I also keep my feeders inside the...