This photo shows clustered southeastern bats, or Myotis austroriparius. As of June 2017, the species joins eight other hibernating bat species in North America that are afflicted with the deadly bat fungal disease known as white-nose syndrome.
Pete Pattavina, U.S. Fish and Wildlife Service
<a rel="nofollow" class="external text" href="https://www.usgs.gov/media/images/clustered-southeastern-bats">United States Geological Survey</a>