New York Field Office
Northeast Region

Indiana Bat (Myotis sodalis)

Endangered – Federal
Endangered – State of NY


The Indiana bat typically hibernates in caves/mines in the winter and roosts under bark or in tree crevices in the spring, summer and fall.  Suitable potential summer roosting habitat is characterized by trees (dead, dying, or alive) or snags with exfoliating or defoliating bark, or containing cracks or crevices that could potentially be used by Indiana bats as a roost.

See the Indiana Bat Summer Survey Guidance for more information.


The most significant threat facing Indiana bat populations today is white-nose syndrome (WNS), a fungal disease. Other major rangewide threats to the Indiana bat include habitat loss/degradation, forest fragmentation, winter disturbance, and environmental contaminants.  In addition to these threats, collisions with man-made objects and climate change are increasingly being identified as significant threats to the future recovery of the Indiana bat.

Species Range

Range information is available on the U.S. Fish and Wildlife Service (Service) species profile.

Please use the Service's Information for Planning and Conservation (IPaC) system ( to determine if any federally-listed, proposed, or candidate species may be present in a particular area.  Note that migrating Indiana bats may occur throughout other portions of New York State.


Draft Recovery Plan (2007)

5-Year Review

Northeast Region Indiana Bat Conservation Strategy

The New York Field Office is participating in many actions associated with the WNS investigation.  Some of these actions directly involve Indiana bats and others involve other bat species.

We assist the NYS Department of Environmental Conservation (NYSDEC) with counts of hibernating bats every other winter.

We assist the U.S. Army with their investigation of WNS transmission and impacts to little brown bats. 

Examples of Actions that May Affect This Species

Impacts to hibernation sites.

  • Filling or digging into sinkholes/cave openings/mine openings.

Impacts to summer habitat.

  • Removing suitable roosting and/or foraging forest habitat.

Impacts to the bats.

  • Cutting trees while bats are in them.
  • Entering hibernation sites in winter.
  • Conducting work near hibernation sites that causes vibrations and loud noises.
  • Conducting prescribed burns in areas with bats present.

Protocols/Best Management Practices

What to Do if this Species Occurs on your Property or Project Site

Follow instructions on our Project Reviews page.


Copenhagen Wind HCP:

Press Release
Copenhagen HCP (~6MB pdf)
Final EA (~6MB pdf)

Draft Copenhagen Wind HCP information:
See Federal Register Notice (pdf)
For all supporting documents, go to the Copenhagen HCP, Draft EA and Supporting files page.
Federal Register Notice of Initial Scoping - April 2015
Press Release - April 2015
Maps: Regional Project Location (pdf) and Project Area (pdf)
Project Planning Area (pdf)
Project Location (pdf)

Tansportation Projects
Federal Highway Administration Range-wide Consultation

Wintering indiana bats in hibernaculum.

Wintering indiana bats in hibernaculum


New York State DEC and Service biologists

NYSDEC and Service Biologists join forces to count hibernating bats

Biologist swabbing little brown bat for fungus

Biologist swabbing little brown bat for WNS

Additional Information


FWS Endangered Species Home PageFWS Endangered Species Northeast Region

What's New in Endangered Species?


Listing & Classification


Training & Presentations

Long Island Recovery Efforts

Project Reviews

Species in New York State



Last updated: August 3, 2020
All images by FWS unless otherwise noted.