With the bird feeder’s simple design, you will be giving wild birds easy access to nutritious food in the form of a seeded fat ball, and by fitting the bird feeder to your window, you will enjoy an outstanding opportunity to watch feathered friends as they feed. To refill the bird feeder, simply unscrew the screw thread and top up with a seeded fat ball or suet cake. Easy fitting with double-sided adhesive tape to the window pane.