Brazilian Free-Tailed bats
The University of Florida in Gainesville is home to the world’s largest occupied bat houses, located on the north side of Museum Road across from Lake Alice.
These specially designed structures house hundreds of thousands of bats, primarily the Brazilian free-tailed bat (Tadarida brasiliensis). At peak capacity, the colony can reach 450,000 to 750,000 individuals.
Brazilian free-tailed bats are medium-sized, with short velvety brown-gray fur, large rounded ears, and a distinctive long tail that extends beyond the tail membrane—earning them their name.
Highly social and migratory, these bats use the UF houses as a major roosting site. They share the space with smaller numbers of evening bats and southeastern bats.
Every evening around sunset, visitors gather to witness the spectacular emergence as the bats stream out in swirling clouds to hunt insects. A single bat can consume thousands of insects nightly, providing free, natural pest control for the campus and surrounding Gainesville area.
The bat houses, established in 1991 and expanded over time, demonstrate successful bat conservation. They highlight the ecological importance of these beneficial mammals, which help control mosquitoes and agricultural pests while supporting biodiversity.
The site remains a popular educational attraction for students, researchers, and visitors.
Nautical Mile Magazine
