The Birdscapes Squirrel-Be-Gone I Wild Bird Feeder features 8 U-shaped perches, 8 feeding ports and holds 6 lb of seed. The interior seed tower is surrounded by metalwork. The feeding ports have sturdy metal perches that allow birds to feed comfortably, but when the squirrels perch on them, their weight causes the entire metal casing to slip down, completely blocking the feeding ports and their access to the seed. The eight perch/feeding station set-up, coupled with the anti-squirrel technology makes this feeder one of the most economical and convenient on the market !The clear, shatter-proof plastic reservoir makes it easy to monitor seed levels. Remember to clean your feeder once every two weeks with mild soap and water solution.