Songbird Essentials Eco Friendly Recycled Plastic Window Mount Platform Feeder Removable Screen Tray Made from eco-friendly recycled plastic Four strong suction cups attach securely to window or smooth surface Removable, reinforced screen tray allows easy cleaning and allows for air circulation to keep food dry Open design allows for use by larger birds like grosbeaks and jays Perfect for live or roasted meal worms, black oil sunflower seeds, safflower seeds, and white millet