So take a good look at my face
My nasal flap looks out of place
It's my sella meant to facilitate
Hearing far away objects

The above is a little known additional verse to Smokey Robinson's beloved
Tracks of My Tears. It was his ode to Bourret's horseshoe bat, Rhinolophus paradoxolophus.
More specifically, to the flap of skin pointed to in the image below. I
can see what it was removed from the LP for mass market appeal, but
many chiropteraphiles were outraged by the ommission.

Researchers
believe that such a flap allows the bats to better ping objects in the
distance with their echo location, thereby getting a better sense of
what's out there. After doing some computer modeling, the researchers
determined that if the flaps got too long, there would be a diminishing
of returns. As it would happen, the three species that sport such a
large flap have the length dialed in on the sweet spot.
Source
Source2