For those of you who like to play bird ID games this is pretty well done. You scroll through a highly detailed visual world and hear the birds -- but they are invisible at first. There are binoculars to zoom in and focus, as well as text hints. Unique, entertaining and educational. As someone who develops interactive training for a living I found this pretty well done. I wish there were more sites like this out there. If you know of any please let me know.