Populations of some bat species have plummeted more than 90 percent in Northeast
caves impacted by “White Nose Syndrome,” according to an extensive investigation by the New
York State Department of Environmental Conservation (DEC), Commissioner Pete Grannis
Surveying 23 caves at the epicenter of the bat die-off in early 2009, researchers found an
alarming decline – 91 percent on average -- in the number of hibernating bats. The study
included 18 caves in eastern New York, four in western Massachusetts and one in Vermont.