The squirrels and the birds have no problem cooperating. The squirrels and ground-feeding birds eat the seed on the ground that the “clinging” birds knock down. I give them a little help by spreading a few seeds on the ground. So far, the squirrels have not been able to knock this feeder down, so it works out for everyone. We also throw out apple cores. The squirrels love them. Click on pictures to enlarge.