Bats (1999)

Something is coming in the night. The dark air fills with the sound of flapping wings and menacing shrieks... BATS. But these are no ordinary bats. The night has wings, and fear has taken flight. When the dark is alive, there's nowhere to hide as swarms of genetically altered bats blaze a path of terror through a sleepy Texas town. The only hope to stop the growing tide of devastation is a zoologist who studies bats, her assistant and the local sheriff.