My quails were wasting so much feed I had to come up with something. I saw the shoe-box type, but I wanted something that would hold more feed an not take up too much space horizontally in the coop. I used a Costco pretzel barrel and PVC pipe. I've published an Instructable here http://www.instructables.com/id/No-Waste-Quail-Feeder/ Four or Six can feed at a time, depending on how many holes you make. It's working out quite well, and I just thought I'd share my design.