A group of gray bats exhibiting signs of white nose syndrome in Hubbard's Cave. Grey bats can get white nose syndrome but the disease does not create significant mortality in the populations. Gray Bat (Myotis grisescens) census in Hubbard's Cave. The semi annual count is led by TN-TNC karst specialist Cory Holiday. The 6 person crew includes members from the Tennessee Wildlife Resources Agency and the Air Force. Hubbard's cave is winter home to approximately 500,000 endangered gray bats. It is the second largest gray bat hibernaculum and one of the largest concentrations of mammals in North America. TNC owns and manages Hubbard's Cave for the benefit of the gray bat population. The cave is protected by large, bat friendly gates that allow bats to move freely while keeping unauthorized human visitors out. Members of the Hubbard's Bat counting team Chris Ogle - TWRA Daniel Istvanko -TWRA Mallory Tate - TWRA Dustin Thames -TWRA John Lamb -US Airforce (AEDC)