CD Jewel Case Birdhouse

Remember when people used jewel cases?  Yeah, that was after the big, black CD looking things, and before the CD storage books.  If you are like me, you still have several of these jewel cases hanging around.  Why not make them into something like the Birdhouse above? (Picture from http://geekware.blogspot.com)

If anyone can see how that thing is glued together, let us know.  Otherwise I am assuming the jewel cases are glued some sort of transparent backing.  Very clever–and you can’t deny that it’s colorful!