This started as a fun project - feed the birds and try to capture birds in flight. However, as with almost all bird feeders - the squirrels figured out how to penetrate the "squirrel-proof" bird feeder. Here is my latest design and results:
The original design:
Bird feeder with wire hanger. Above, a funnel and 16" pizza pan. The idea is to make the pizza pan difficult to get to and its teflon coating makes it slippery.
On the sidelines is a squirrel enjoying a peanut