most was how easy it was to refill. you can slide the feed tray right out of the bottom without having to take the feeder off the window. that means you can get fresh feed put in as often as you need it (which around here is almost daily). it makes it easy to clean, too!
we have decided to make the large picture window in our family room the permanent home for this neat new way to enjoy birds. my kids are forever looking out the window anyway, but this time, instead of watching birds across the yard with binoculars, they can watch right from the window -- up close 