The KOVOT Acrylic Window Bird Feeder and Perch allows you to view birds close-up from inside your home. Attract all kids of birds by using different seeds. It is made of a lightweight, very durable, all-weather, high transparency acrylic. Attached are 3 high quality suction cups for added stability. The removable feed tray allows for hassle free cleaning and refilling without tampering with the suction cups.