Brazilian Free-tailed Bat (Tadarida brasiliensis) in Wisconsin—A New Northern Record for the Eastern United States
J. Paul White1,*, Heather M. Kaarakka1, Jennifer A. Redell1, and Alyssa Baumann2
1Wisconsin Department of Natural Resources, Madison, WI 53707. 2Wisconsin Humane Society, Milwaukee, WI 53208. *Corresponding author.
Journal of North American Bat Research Notes, Volume 4 (2026):N1–N5
Abstract
We document the first record of a Tadarida brasiliensis (Brazilian Free-tailed Bat) in Wisconsin, ~135 km north of the closest records of this species in Illinois. The bat was a juvenile female captured in a building, in the city of Milwaukee, on 22 October 2025. This observation adds to the extralimital records of this species and is the most northern record currently reported for the Brazilian Free-tailed Bat in eastern North America.
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Journal of North American Bat Research is valued by the academic, agency, NGO, and private-sector research community as a respected and trusted source for science related to all aspects of the biology, ecology, and conservation of bats, Order Chiroptera, and their habitats in North America, from Canada to Panama, and the West Indies (Bahamas, Greater Antilles, and Lesser Antilles). Manuscripts based on studies outside this region that provide information on species within the region may be considered at the Editor’s discretion.