Chicago Ecological Services Field Office

Midwest Region


Chicago Field Office

230 South Dearborn St.,

Suite 2938

Chicago, Illinois 60604
Phone: 312-216-4720

FAX: 312-216-1788
TTY: 1-800-877-8339
(Federal Relay)


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We work with public and private entities to conserve and restore Chicago metro area endangered species, migratory birds, wetlands, and other important fish and wildlife resources.



For questions about CITES permits, and importing wildlife and wildlife parts, please contact the USFWS Chicago Wildlife Inspection Program (847) 298-3250

Feature Story

U.S. Fish and Wildlife Service Determines

Critical Habitat is Not Prudent for

Threatened Northern Long-eared Bats


Hibernating northern long-eared bat.

Hibernating northern long-eared bat.

Photo courtesy of Dave Thomas/Creative Commons License


Determination based on desire to reduce potential disturbance at hibernation sites, habitat requirements of species, and acknowledgement of white-nose syndrome as primary threat


April 25, 2016

Given the nature of the primary threats facing the species and the potential harm of publishing its hibernation locations, the U.S. Fish and Wildlife Service has determined that designating critical habitat for the northern long-eared bat under the Endangered Species Act (ESA) is not prudent. The Service’s determination does not affect the bat’s threatened status, which it received in 2015 due to white-nose syndrome, a deadly fungal disease impacting cave-dwelling bats.


Critical habitat is a designation under the ESA for lands that contain habitat features that are essential for the survival and recovery of a listed species, which may require special management considerations or protections. The ESA requires the Service to consider which areas are needed for a species’ recovery and to designate critical habitat accordingly, unless it determines that doing so is not prudent for the species.


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Last updated: May 2, 2016