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 feeder s 4.5 lb seed capacity, the Panorama Wild Bird Feeder provides plenty of seed to go around!