Here's the feeder that I made for my kids. Uber simple and works very very well.
Take 5 gal bucket w/lid and 22" or 24" platter that goes under plant pot.
Sit bucket in platter and mark height of platter edge on side of bucket.
(Or you could just measure, I like using Kentucky windage, grin)
Then I bored 4 holes, across from each other, in the bottom of the bucket making sure to NOT go above the marks I made for the platter. I believe that I used a 2" hole bit. (The kind used for putting in doorknob sets.)
Then I bolted the bucket to the platter by drilling 4 holes through them both and using bolts, large flat washers and nuts.
At this point, you can simply fill the bucket and it will fill the platter. If you bend the handle so it comes to a peak in the middle ... you can hang it like I did at the birds head height so they dont scratch the food out.
I also had an old plywood scrap that I cut a hole in and just let it hang above the handle so the birds dont perch on it. (See pic, I don't explain things very well. grin)
Hope this helps! It really works well for my kids ...
Peace!
OH OH! Although it feeds them perfectly, I am thinking about adding an upside down cone/funnel inside at the bottom. Just to help the dispersal when the food level gets low. *shrug*
PS: Ignore the duct tape please. I used the lid from my old upside down tomato planter.