The Natures Way Sunflower Seed Bird Feeder 17 in. (PS17) features twist and clean technology that allows you to simply twist the ports, perches and base for easy cleaning and filling. This product has 6 feeding ports to invite more birds to your space. The 6 sides of this feeder allows you to view up to 50% more birds. It's UV protected so it will not fade in the sunlight. It has a clear tube so you will know when to fill up the feeder. This product has a wider tube for easy cleaning and filling. The perches allow the birds to feed comfortably on your feeder.