These Seed Feeders Help To Make Bird Feeding Even Easier. The Base, Lid And Ports Are Easily Removed With Our Unique 'Click and; Go' Release System Which Allows You To Dismantle, Clean, Reassemble And Fill Your Feeder Without The Use Of Tools. The Unique Ventilation System In The Lid Prevents Condensation In The Tube, Helping To Keep Food Fresh For Longer. The Perching Rings Allow Birds To Feed In Their Natural Feeding Position (Facing Forwards) And Gives Birds A Clear View Of The Surrounding Area To Watch For Predators. The Off-Set Spacing Of The Ports Provides Each Bird With A Clear Feeding Area Which Results In More Hygienic Feeding.