The Midwest Region includes Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio and Wisconsin. Find a location near you
Endangered Species Program
Conserving and restoring threatened and endangered species and their ecosystems
Northern Long-eared Bat
Final 4(d) Rule
Section 4(d) of the Endangered Species Act directs the Service to issue regulations deemed “necessary and advisable to provide for the conservation of threatened species.” It allows the Service to promulgate special rules for species listed as threatened (not endangered) that provide flexibility in implementing the ESA. We use 4(d) rules to target the take prohibitions to those that provide conservation benefits for the species. This targeted approach can reduce ESA conflicts by allowing some activities that do not harm the species to continue, while focusing our efforts on the threats that make a difference to the species’ recovery.
For the northern long-eared bat, the 4(d) rule tailors protections to areas affected by white-nose syndrome during the bat’s most sensitive life stages. The rule is designed to protect the bat while minimizing regulatory requirements for landowners, land managers, government agencies and others within the species’ range.
Briefing Slides: About the 4(d) Rule Jan. 14, 2016
WNS Zone Map (1-page PDF)
Map updated August 1, 2018. The WNS Zone map is updated on the first of every month if there are new counties with verified occurrences of white-nose syndrome or Pseudogymnoascus destructans (Pd), the fungus that causes the disease.
Counties in WNS Zone (Excel Spreadsheet)
Updated July 2, 2018. Counties in the WNS Zone are updated on the first of every month if the zone changes due to new counties verified with white-nose syndrome or Pseudogymnoascus destructans (Pd), the fungus that causes the disease.
Counties in Northern Long-eared Bat Range (Excel Spreadsheet)
Updated December 31, 2017.
Last updated: August 6, 2018