@ Babalaas- You may want to try looking up plans on how to build a platform bird feeder. The larger birds like the ones you are trying to attract do not like to feed while precariously perched above the ground. You will need a sturdy feeder that offers them a place to roost while they feed.
A platform feeder with a mesh bottom would be ideal. You may also want to put an inverted metal cone around the middle of the feeder to deter the pesky squirrels. You want some type of flange that will prevent them from climbing up the pole.