I feed layer crumbles - 18 % protien. But am going to try the agway brand @ 21% protien. My birdswaste the mash. I use a piece of metal gutter capped on the ends for a feeder. I put 2 chains on it about 1/3 in from each end and hang it from the wall. I raised it so the feeder is level with their backs. It works great & is cheap, for $7 @ lowes you get a 12' piece of gutter. I made 2 feeders out of it.