Have you checked out "Beyond Your Backdoor"? It's a nature store and a new division of Lesser Jewellers.
Window Bird Feeder
This acrylic bird feeder has two compartments and has transparent walls and roof! The roof slides off to easily refill the compartments. Its closed design offers protection for the food. The feeder can be placed on the window or on a wall by the two included suction cups. Thanks to the transparent material it is possible to watch the birds enjoy their food.
Style: 122BB FB372