My money's on the squirrels! ;-)
Looks like a fine piece of art indeed ! Great work. And yes, please keep us updated upon birds vs. squirrels. Please have a good Sunday.
The squirrels have not come to explore this free buffet yet. I know they are good at getting where they want to go. Just perhaps the thin pole and the height of the feeder will deter them. I'll report back in a while.