[justshe]

Actually........hubs cut some circles out of tin.... with the center of the circle cut out and the circle cut 'OPEN" in one place. We spray painted them a trendy hunter green....and made collars that go around the trunk of the tree that we hooked together with screws......and the little 'darlings' can't get past the collars to get to the bird feeder.

Cyber....love mine. Although.....it takes some creative aiming to hit something with a handheld BB gun! The holes thru our retractable vinyl deck cover attest to my prowess......NOT!

[Cyber Liberty]

Don't forget to loosen up and move the collars up or down every year or so. You can choke off the saplines that way.