This acrylic bird feeder set is a neat way to allow children a way to observe wild life up close without putting them or the animals in harms way. It works really nicely if you have mirrored tinted film on the window that you install it on. The mirrored one way tint allows you to see out at the birds eating but keeps them from noticing you closely watching them. I have found this allows our family to watch more birds without upsetting or scaring the birds. This also allows our indoor kitty a great vantage point for his pseudo stalking of the birds without actually putting the birds in any harms way and without making the birds scared or stressed. It is without a doubt my kitty's favorite seat in the house. I do wish it was bit larger so that more birds could be on it at one time but otherwise it is really a cool feeder. #RankBoosterReview