I'm SW of Lake City, likewise they have never bothered my chickens, though they have caused them to alert and scatter on occasion. We mostly have the turkey vultures. Nothing creepier than a dead snag tree full of them resting on a foggy morning. I know that the black vultures tend to follow...
Vultures are state and federally protected as migratory birds so it's illegal to kill them without a permit. Florida Fish and Wildlife suggests using 'pyrotechnics' to scare them off.
https://myfwc.com/wildlifehabitats/profiles/birds/raptors-and-vultures/vultures/