Wisconsin Ecological Services Field Office

Midwest Region



Wisconsin Field Office

2661 Scott Tower Drive
New Franken, WI 54229-9565
Phone: 920-866-1717
Fax: 920-866-1710
TTY: 1-800-877-8339 (Federal Relay)

e-mail: GreenBay@fws.gov


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We work with public and private entities to conserve and restore Wisconsin's endangered species, migratory birds, wetlands, and other important fish and wildlife resources.

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Feature Story

Wisconsin Kirtland’s Warbler

2018 Nesting Season Report

Male Kirtland's warbler.

Photo courtesy of Joel Trick.


February 4, 2019


On April 12th, 2018, the US Fish and Wildlife Service published a proposed rule to remove Endangered Species Act protection for the Kirtland's warbler. Publication of this proposed rule means that the Service believes the Kirtland's warbler no longer faces the threat of extinction and that mechanisms are in place to ensure continued habitat management and cowbird control so that the warbler's recovery will remain intact into the future. The 90-day public comment period on the rule closed on July 11, 2018. Comments received from the public and peer reviewers on the proposed rule are being evaluated and a final determination on the status of Kirtland's warbler is expected in the Spring of 2019.


Kirtland’s warblers nest in young jack pine stands in Michigan and red/jack pine stands in Wisconsin and Ontario, winter in deciduous forests of The Bahamas, and were among the first wildlife in the United States identified as being at risk of extinction. Populations dipped to a low of 167 pairs in 1974 and when the Endangered Species Act was passed into law in 1973, the Kirtland’s warbler was on the initial list of endangered and threatened species. With cooperative efforts among conservation partners, the Kirtland’s warbler population is now estimated to be over 2,300 pairs, more than double the recovery numerical goal. The Kirtland’s warbler population continues to grow and has exceeded the numerical recovery goal for the past 16 years.


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Last updated: February 11, 2019