First things first, there are only a few kinds of backyard birds that can safely ingest pumpkin seeds. The range of birds living in the suburban U.S. has a varied and expansive diet. Some, like robbins, gravitate towards heavy nuts and grubs — things that can be foraged from the ground — and stay away from bird feeders altogether. While not all birds enjoy pumpkin seeds or bird feeders, most will at least try them, and some will love them.