The idea for these displays came from a Birdsong Identiflyer. This handheld device plays high quality recordings of a variety of birds.  You can purchase different cards for these units for different categories of birds.

I covered a piece of plywood with white laminate. A hole was made in the plywood just large enough to receive the device from the backside. The buttons for the device stick through small holes made in the thin layer of laminate. Another hole was made in the laminate to expose the small speaker. The rest of the project was simply making lines from the buttons to the corresponding bird photos/information.