My kids put bird seed all over the picnic table, which didn't make me happy. We used to have a hummingbird feeder and a purple martin house, and a thing with suet in it. We get owls, hawks, goldfinches, various swallows, cardinals, and some other birds. No bluejays, pidgeons, or crows.
The dog kills the squirrels and the rabbits. And the moles.