Information for Cavers

The caving community has a strong conservation ethic and has provided long-time support of bat conservation. We request that cavers observe all cave closures and advisories and refrain from caving in WNS-affected states and adjoining states at any time. We also recommend refraining from caving anywhere during bat hibernation to minimize disturbance to bats.


How Does White-Nose Syndrome Kill Bats? New Science Helps Explain Hibernation Disease

For the first time, scientists have developed a detailed explanation of how white-nose syndrome (WNS) is killing millions of bats in North America, according to a new study by the U.S. Geological Survey and the University of Wisconsin. The scientists created a model for how the disease progresses from initial infection to death in bats during hibernation.

Three bat species listed as endangered under Canada's Species at Risk Act due to white-nose syndrome

December 17, 2014 The Government of Canada has added three species of bats to the List of Wildlife Species at Risk in Canada (also known as Schedule I of the Species at Risk Act). These three bats species - the Little Brown Myotis (Myotis lucifugus), the Northern Myotis (Myotis septentrionalis) and the Tri-colored Bat (Perimyotis subflavus) - have been listed as Endangered, as their survival is imminently threatened by the deadly and highly contagious disease white-nose syndrome.

Study of deadly bat disease finds surprising seasonal pattern of infections: new publication

White-nose syndrome fungus can infect an entire bat colony during hibernation, but surviving bats are able to clear the infection after they become active again.

US Fish and Wildlife Service reopens public comment period for northern long-eared bat

The Service is reopening the comment period on our October 2, 2013, proposed rule to list the northern long-eared bat (Myotis septentrionalis) as endangered under the Endangered Species Act. We recently received additional information from state agencies within the range of the species, this information is available at

Updated WNS Map September 3, 2014

Reflects white-nose syndrome confirmed in Richmond County, Nova Scotia, Canada.
Updated WNS map September 3, 2014344.81 KB

Mammoth Cave Bat Night takes flight September 6

MAMMOTH CAVE, Ky., August 25, 2014 – Have you ever wondered how scientists study bats? Would you like to use night vision equipment to watch bats flying out of a cave? Would you like to see what bats eat or hear the different calls that bats make?

Updated WNS Map August 25, 2014

Reflects western-most confirmation of white-nose syndrome in Canada: in Thunder Bay District, Ontario, near Lake Superior.
Updated WNS map August 25, 2014343.68 KB

Updated WNS Map August 18, 2014

Reflects white-nose syndrome confirmed in Clay, Macon and Grainger Counties, Tennessee.
Updated WNS map August 18, 2014283.05 KB

What is the U.S. Fish and Wildlife Service recommending in its cave advisory?

What is the U.S. Fish and Wildlife Service recommending in its cave advisory?

The Service’s cave advisory has recommendations to limit the possible spread of white-nose syndrome by human activity:

  1. A voluntary moratorium on caving in states with confirmed WNS and all adjoining states; Nationally, in states not WNS-affected or adjoining states, use clothing and gear that has never been in caves in WNS-affected or adjoining states; State and federal conservation agencies should evaluate scientific activities for their potential to spread WNS; and Nationally, researchers should use clothing and gear that has never been in caves in a WNS-affected or adjoining state.
  2. This also applies to mines used by cavers.