Tool-free design: Every component is easy to take apart by hand — no tools required for cleaning or assembly. Fresh seed = more birds. Seed ventilation system: Our patented design keeps seed fresh longer, attracting more wild birds to your feeder. Water Diversion System: Unique to the Evolution, our water diverter features a two-part design with a trough and spout, complemented by a drip edge above each seed port. This innovation guarantees that water never compromises the dryness of the bird seed. Double Cardinal Ring for more comfortable perching.