He's just a cat doing what cats do. We used to have one that would sit on the porch rail all day. He would leap in the air to try to catch birds as they flew out of a tree. Maybe he would get one out of a hundred but it didn't seem to matter. Pippens a little stinker though. He makes friends with his prey:')
It's actually the other kitten, Tweek, who has been up on the feeder with the squirrels. Pippin didn't befriend them, he's always been after them. But maybe that added to the confusion.