Cute idea! I found the change to night time a little spooky and unexplained, but it was neat to click on the different birds and match them up. I think having real bird calls and after matching showing what kind of bird made the call would be a neat learning element to the game.

Interesting Idea, however I found out that you did not have to listen to the birds at all and could only match them blindly without any repercussions. If that would be fixed it could be a fun game.