chenming Window Bird Feeder Bird Feeders for Outside Large Bird House for Outside Wild Bird Feeder with Strong Suction Cups and Seed Tray 1 Pack

What purpose does the hole in the back serve? If the suction cups are pressed against the glass, you cannot access that hole. Period.Other feeders with a solid back suffer from condensation build up between your window and the feeder, blocking your view of the birds. The Circle Cut Out on the Back of this Feeder Vents condensation that can build up between the glass and the back of the feeder when it rains or when it is humid out. It Also provides a better bird watching experience by allowing users a clearer, un-obstructed view of birds while they are feeding. This was a cool idea for a bird feeder. It goes right on your window . The birds love it already and the kids love seeing the birds come right up to the window. Packaging and transportation?Was packed well and the product was safe inside bubble wrap inside the company's box.Fulfilled by amazon,Will reach you in the fastest speed.