Florida residents have just over a month to check their attics and eaves for uninvited guests before the state’s annual bat maternity season locks down all removal efforts. According to the Florida Fish and Wildlife Conservation Commission (FWC), April 15 marks the final day homeowners can legally “exclude” bats from buildings until the late summer.
Florida is home to 13 native bat species, including the endangered Florida bonneted bat. While these animals typically prefer the hollows of trees or deep caves, they frequently move into man-made structures to raise their young.
The official maternity season begins April 16 and runs through August 14. During this window, it is illegal to block bats from their roosts, as doing so could trap flightless pups inside, leading to the death of the animals and potential odor and sanitation issues for property owners.
“Bats provide important ecological and economic benefits, saving farmers billions of dollars each year in pest control,” the FWC noted in a recent release. In Florida, every native species is insectivorous. A single bat can eat hundreds of insects—including mosquitoes and agricultural pests—in one night. Beyond pest control, bats worldwide serve as pollinators and seed dispersers, while their guano is prized as a high-grade natural fertilizer.
Because it is illegal to kill or harm bats in Florida, the FWC has established specific exclusion guidelines for use outside of the maternity window. These rules require the installation of one-way devices that allow bats to leave a building but prevent them from re-entering.
These devices must stay in place for at least four nights, and the process can only be performed when overnight temperatures are forecast to stay above 50°F.
Wildlife officials suggest that residents conduct a final spring inspection now to identify and seal any potential entry points before the mid-April deadline.
To support local populations, the FWC recommends that landowners preserve natural roosts like hollow trees or dead palm fronds, plant native gardens to attract prey insects, or install bat houses.
For those dealing with a current roost, the FWC advises contacting a regional office to speak with a wildlife assistance biologist. Any sightings of sick or dead bats, or unusual behavior, should be reported directly to the agency’s mortality database at MyFWC.com/BatMortality.
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