A growing majority of bat species are in serious trouble, largely because of white nose syndrome, a deadly fungal disease that resembles a white fuzz on infected bats. As the disease has spread across the country, it's decimated bat populations – killing upwards of 99 percent of some populations – and turned up in many national parks. As part of the National Parks Traveler's Threatened and Endangered Species Project, contributing writer Kim O'Connell has been looking into the situation with bat species.
