NHPR: Something Wild : NPR

By the time the cold weather months hit us, three of New Hampshire’s eight species of bats have already migrated to warmer places in the South and Mid-Atlantic regions. The bat that DO overwinter in New Hampshire have relocated out of their preferred summer roosts in trees (and Dave's chimney), and into winter hibernacula like caves, mine shafts, and abandoned military bunkers where the microclimate is just right. These cozy shelters provide stable temperatures, higher humidity, and protection from predators. But they also provide the perfect climate for Psedogymnoascus destructans, the fungus that causes White-nose Syndrome in bats. According to Sandi Houghton, a wildlife biologist for New Hampshire Fish and Game / Non-game and Endangered Wildlife Division, as many as 99% of New Hampshire’s little brown bats were wiped out because of this fungus-- found in the very places bats take winter refuge. In fact most of what’s left of the little brown bat population in New Hampshire may be