My friends at Ravenswood Media have posted a documentary they produced about bats. Documentarian David McGowan specializes in issues related to endangered species and his films get in very close to critters in their native habitat, in this case caves. Dave sometimes spends the night in caves, and might wait many hours up to his waist in a marsh or wetland waiting for the ideal shot. See the blog here.
The Battle for Bats: White Nose Syndrome from Ravenswood Media on Vimeo.