Bats are mammals β real mammals, with fur and milk-fed babies β and they fly. They are the only mammals that truly fly (flying squirrels just glide; bats flap). The mammals guide covered the fur crew on the ground. This guide is the fur crew in the air β and it sees the world in a way no other animal in this trail does: with sound.



Free-tailed bats are Florida's most common bats, living in huge colonies in caves, bridges, and bat houses β sometimes hundreds of thousands strong. They fly fast and high, chasing moths and beetles, and a single free-tailed bat can eat hundreds of insects in one night. They are called "free-tailed" because their tails stick out past the wing membrane, like a little rudder. At dusk, a free-tailed colony pours out of its roost like smoke. If you have seen a river of bats at sunset in Florida, you have seen these.
Evening bats are the ones over your yard at dusk, fluttering around streetlights and trees, snapping up mosquitoes and moths. They roost in tree cavities, Spanish moss, and old buildings β sometimes in small family groups, sometimes alone. They are small, brown, and unremarkable-looking, which is exactly why they are remarkable: the most ordinary-looking bat in Florida is doing extraordinary pest control over your head every single night.
The Florida bonneted bat lives only in South Florida β nowhere else on Earth β and it is one of America's biggest bats, with huge ears that flop forward like a bonnet (that is the name). It is endangered, which means there are very few left, and every one matters. Bonneted bats roost in old trees, rock crevices, and bat houses built for them. Seeing one is a privilege. Disturbing one is not an option.
All three bats hunt with echolocation: they shout (in sounds too high for humans to hear), the sound bounces off insects, and the echo tells them exactly where dinner is β distance, direction, size, even speed. It is seeing with ears. A bat can catch a mosquito in total darkness, mid-flight, using only echoes. Close your eyes and imagine navigating your whole life by shouting and listening. That is a bat's every night.
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Want bats in your yard (you do β remember the mosquitoes)? A bat house, mounted high on a pole or building, facing the sun, gives bats a safe roost β and gives you a mosquito patrol that works all night for free. Grown-ups pick the spot and do the mounting; kids pick the watching spot at dusk and count the bats that come out. Bat houses work best when they are high, sunny, and near water and trees β bats like a commute as short as yours.
So at dusk, go outside and look up. The fluttering shapes over your yard are not birds (birds are mostly done for the day) β they are mammals, flying with hand-wings, hunting by echoes, eating your mosquitoes for free. The night shift has a flying crew. Now you know its names.