1.Our window bird feeders are easy to install, no assembly required! Made from extremely clear, crystal clear acrylic that is virtually unbreakable, you can watch the gorgeous songbirds in vivid detail just inches away from yours. 2.View: bird feeders on the window outdoors provide unobstructed view! With no obstacles, the clear background is the perfect place to watch and admire your favorite birds. 3.Suction Power, Never Fall Off This outdoor window bird feeder is equipped with four of the strongest suction cups that can support a maximum weight of 22 pounds. It stays in place, even if many birds eat at the same time, and can withstand all harsh weather conditions. If you place it at the right height, you can watch birds. 4.Improved bird watching experience: the transparent window mounting bird feeder features a unique textured perch design that mimics the feel of natural tree branches and allows the birds to feel at home. So you can admire a variety of wild birds for a long time. It is suitable for a variety of bird species, including oriole, finches and cardinals.