First thing we need is a fence post, fixed sturdily in the ground. Cut the fence post to the required height, slightly above eye level.
Cut the top shelf (approx 33cm square), then cut the bottom shelf (approx 50cm), 12mm plywood is ideal. The bottom shelf needs to slip over the post, so use a fence post off-cut to mark the cut in the middle of the shelf. Drill two guide holes and cut out with a jig knife. Slip over the post down about 50cm from the top. Fix two 150mm 2 x 1’s onto the fence post here to support the shelf. Now put an edge around the shelf, some very light wood, to contain any bird food dropping from above. This is to avoid attracting rodents. Now fix the top shelf to the top of the post, screw three or four hooks into the underside to hang the feeders. Make sure to paint or varnish the plywood to protect it from the elements. Now your bird feeder is ready.