The Perky-Pet Panorama Wild Bird Feeder features our innovative Evenseed technology. This technology is like having 2 feeders in 1. Two independent seed compartments are filled and emptied separately, allowing the ports to stay active longer. Both compartments can also be filled with two different types of seed, thus attracting a larger variety of birds. With this feeders 4.5 lb. seed capacity, the Panorama Wild Bird Feeder provides plenty of seed to go around. The Sure-Lock cap system ensures the lid stays in place and no squirrels can get to the seed. Another great feature on this feeder that helps keep squirrels out while allowing birds to have access to the seed. Remember to clean your wild bird feeders every two weeks with a mild soap and water solution.