I'm going to embarrass myself a bit, because it's not an area that I know well.
In my history—I was full time at McMaster before coming to Toronto—there was a remarkable man named Dale Buchanan, who was known as “bat man”. Much of the research looked at three things within the bat colonies. One was the saliva of bats and its conditions for the prevention of blood clotting. The other that I know of is the spatial array that bats have in terms of the equivalent of the most advanced sonar known to man, and looking at geospatial positioning.
Beyond that, I would be happy to follow up with a note to you and speak to my colleagues, who are much more knowledgeable.