Bird feeder

I have two cardinal pairs coming every day to the feeders.
Unfortunately they are often chased away by the pigeons/doves.
So I decided to add this small plate for cardinals only.
I fill it with nuts and other seeds the pigeons don't fancy.

The pole is 1/2" in diameter.
The feeder walls are high enough to keep the seeds from spilling.

It is a quick project - a simple sketch in Fusion 360, merely a few circles pulled up to different height/plane.

So far it works ok.
Blue jays and cro