this how-to has pretty much all you need, i think i might make a slightly different version where the bat phone is a bluetooth headset, then i don’t need to use the phone line.

ODFW also provides access to blueprints for folks who want to build their own bat box to provide a safe, alternative roosting space for colonies. As the days grow longer and the weather warms ...

Members of the Florida Bat Conservancy are inviting participants to learn about bat conservation and construct their own bat ...