Our bird feeder features a self-contained, spring-loaded stand that requires no adjustments and works right out of the box. This also prevents the feeding port from closing when too many birds try to feed from the feeder at the same time, a common problem with single-body weight-response anti-squirrel feeders. Not just a 100% squirrel proof bird feeder - also a squirrel proof, red squirrel proof, chipmunk proof bird feeder and deters larger birds. Pests can't eat it, so it saves you money. The bird feeder has a built-in weather guard to keep seeds fresh and dry and prevent seed clogging. Seed clogging is a common problem with other weight activated bird feeders without seed protection. Color: 绿色. Material: Metal.