This Garden Song Patented Upside Down Thistle Feeder bird feeder serves as a welcoming feeding station for birds. It provides six feeding ports staggered around the lower half of its long, skinny, tubular frame. Each feeding port provides a unique T-shaped perch that offers stability and comfort, encouraging birds to sit and dine for as long as they like. Made of durable plastic, the bird feeder features a transparent reservoir that allows for monitoring seed levels at a glance. The top, bottom, and each feeding port and perch come in a lovely forest green color that works as an eye-catching accent, nicely accommodating surrounding decor and natural landscaping.When it’s time to fill the feeder, simply unscrew the reservoir from the base and tip the unit upside down. Pour in up to 1.75 lb. of seed, screw the base back on, flip it over, and it’s ready to go. The bird feeder can be filled with a variety of seed, including Black oil sunflower seed, safflower seed, and mixed seed. Be sure to keep this classic bird feeder clean and filled with fresh seed to ensure happy, healthy birds and many return visits. Perky-Pet recommends checking this bird feeder once a week for insects or mold and cleaning it at least twice a week with a mild soap and water solution, more often in very warm climates or seasons.