RA.92 Photographic estimates

92. Historically what has been used to estimate bats has been photographic estimates, visual estimates, mark-recapture estimates, and those have been highly prone to bias.Newer technology, like thermal imaging cameras is accurate, but expensive. So at a time of epic bat mortality-due to, for example, the fungal white-nose syndrome that's wiping out bats in Canada and the U.S. Kloepper says her method might be a cheap, reliable way to determine the most critical caves to save.