Squirrel Proof Bird Feeders: The metal bird feeders weight-activated spring, which is calibrated to support the weight of birds but not squirrels. When squirrels attempt to approach the birdseed from bird feeder, the weight activated spring will be pulled down, blocking the birdfeeder's feeding port. Our bird feeders for outdoors hanging are designed to keep squirrels out, ensuring that birdseed in the wild bird feeder is reserved for your favorite feathered friends. Metal Bird Feeder: The weight activated bird feeder is made of all metal, chew proof. The top cover of the squirrel-proof bird feeder is securely closed, and even smart squirrels won't open the cover. The surface coating of the all metal bird feeders not only adds a unique style, but also can be ensure rust-proof for all-weather durability. Large Capacity Birdfeeder: The large bird hopper feeder can load up to 2.5 pounds of black-oil sunflower seed, mixed seed, hulled sunflower seed, or safflower seed, which means you don't have to refill birdseeds too frequently. The detachable roof and large opening make the hanging bird feeder easy to fill birdseeds and easy to clean. The transparent window also allows you to see the amount of seeds, which allows you to replenish the seeds in time. Bird Feeders for Outdoors Hanging: Our bird feeder squirrel proof not only keeps squirrels out, but its unique style design more attracts a variety of birds. Hummingbirds, cardinals, blue jays, and other small birds will be attracted to your garden by this beautiful wild bird feeders for outside. Watching cute birds eating on the bird feeder can give you a sense of tranquility, enrich your daily life. Each weight activated squirrel proof bird feeder undergoes strict quality testing when leaving the factory, but it cannot be 100% guaranteed that each hanging metal bird feeder is intact during transportation. If you have any quality issues or dissatisfaction with the squirrel-proof bird feeder you received, please contact us first and we will do our best to provide you with a satisfactory response.