Disease control
A vulture's stomach acid is strong enough to kill most bacteria in rotting meat, including anthrax and cholera germs. When vultures in India crashed by more than 95 percent in the 1990s and 2000s, poisoned by the cattle drug diclofenac, feral dogs multiplied and rabies cases rose.
Why bare heads
A featherless head stays clean when it reaches inside a carcass and dries in the sun. Bare skin also helps shed heat.
Roosts
Florida gets big winter roosts of both species, sometimes hundreds of birds on towers, dead trees and roofs. Vultures soar on rising warm air (thermals) and rarely fly early in the morning.
The law
Both species are protected by the Migratory Bird Treaty Act (1918): it is illegal to kill them or disturb nests without a permit. Ranchers losing livestock to black vultures can get federal depredation permits from the U.S. Fish and Wildlife Service, often through state farm bureau programs.
For classes
Grades K-2
The Nest: Predict the beakPreview Grades 3-5
The Living Earth: Who eats whom?Preview Grades 6-8
Ecosystems: A Web from the WallPreview Grades 9-12
AP Environmental: invasive species, endangered species and global changePreview Drawer: Zoo: Vultures, the cleanup crew QR B3SADT
Quiz: Vultures quiz · 5 questions
Next door: Raptors · Natural history: bird room
Checked November 2026. Figures marked (est.) are estimates; statuses are flagged in the catalog for re-checking against the live IUCN Red List before acceptance.