Window Bird Feeder - Suction Cup Attaches Feeder to Outside of Window - Best Feeder for Small Wild Backyard Birds - Feeding station Mounted to Window so Watching Birds Is Fun - Unique Clear Feeder Watch birds up close from your kitchen or living room Suction cup holds feeder firmly to window Seed chamber slides out for easy filling of your favorite feed Made of durable clear plastic Dispenses sunflower and mixed seed. (Chickadees prefer sunflower seeds)