Dying bats in the Northeast remain a mystery

Investigations continue into the cause of a mysterious illness that has resulted in the deaths of thousands of bats since March 2008. At more than 25 caves and mines in the northeastern U.S, bats exhibiting a condition now referred to as “white-nosed syndrome” have been dying.

The U.S. Geological Survey (USGS) recently issued a Wildlife Health Bulletin, advising wildlife and conservation officials throughout the U.S. to be on the lookout for the condition known as “white-nose syndrome” and to report suspected cases of the disease.

USGS wildlife disease specialist Dr. Kimberli Miller advises that "anyone finding sick or dead bats should avoid handling them and should contact their state wildlife conservation agency or the nearest U.S. Fish & Wildlife Service field office to report their observation.”

Large-scale wildlife mortality events should be reported to the USGS at http://www.nwhc.usgs.gov/mortality_events/reporting.jsp.

The USGS National Wildlife Health Center in Madison, Wis. has received nearly 100 bat carcasses mostly from New York, Vermont, Massachusetts, and Connecticut. The syndrome affects species including the little brown, big brown, northern long-eared and eastern pipistrelle bats.

The condition was first observed in February 2007 in caves near Albany, N.Y. by the New York State Department of Environmental Conservation. Dead and hibernating bats had a white substance on their heads and wings. In early 2008, “white-nosed” bats were once again seen at hibernation sites.