Durable Screw Suction Cup: By tightening the nut, it will pull up the center of the suction cup, the tighter the nut, the stronger the suction power. Compared with the 25% shedding rate of the old ordinary suction cup, the shedding rate of the improved suction cup is only about 5%. Suction cup holds up to 10 lbs. Easy to fill and clean: Easily refill seeds into the tray. When cleaning, just remove the entire bird feeder and rinse it with water or wipe the surface with a wet towel. It's perfect for a backyard or apartment window. Comes with 2 bird attracting poles to make landing on the bird feeder more comfortable for themDehumidification System: Features precise laser drilled drainage holes. This bird feeder effectively drains moisture from the tray after rain or snow, keeping the tray dry and preventing mold. The holes are designed to be large enough to drain water, but small enough to prevent seeds from passing through.CLEAR WATCHING DETAILS: Window bird feeders offer spectacular views with clear acrylic and house-shaped designs, watch cardinals, bluebirds, finches, chickadees, juncos, chickadees, nuthatches, chickadees, sparrows and more with this completely Enjoy your own fun feeder with the transparent see-through unit. PERFECT GIFT FOR ANY AGES: Provides a fun time for anyone, from toddlers to seniors living in retirement communities. Not only do house-shaped window bird feeders make great backyard bird watching gifts, bird lover gifts, but they also make endlunique gifts for parents, dads, moms, and kids. It's like watching a nature channel, but better because it's live!