The African white-backed vulture (Gyps africanus) is the most widespread and common vulture in Africa. In its sub-Saharan habitat, it performs a critical role in the ecosystem: cleanup and recycling.
Vultures survive on carrion. They circle and soar through the sky, keeping a keen eye out for signs of a meal—a dead zebra, wildebeest, or another large ungulate. They swoop in, usually in large numbers, and rapidly devour dead animals before they have time to rot.
Though not a glamorous job, it’s an important one. Decaying animals are a breeding ground for dangerous bacteria and diseases. The vultures’ powerful stomach acids neutralize pathogens, such as rabies and anthrax, and ensure they are not passed on to people, livestock, or other wild animals.
In the past few decades, though, the once robust population of African white-backed vultures has dropped dramatically, declining by 90 percent. This is likely due to a number of factors: habitat loss, fewer food sources, and hunting for use in traditional African medicine.
The most significant factor, however, may be poisoning. Frustrated livestock owners use toxic pesticides to poison lions, hyenas, and other predators that attack their livestock. When vultures and other scavengers feed on the contaminated carcass, they too are poisoned.
Poachers also poison vultures. When they illegally kill an elephant or rhino for its ivory tusks, poachers typically leave the carcass behind. Vultures flock to it, sometimes in the hundreds, signaling park rangers to come investigate. To prevent this, poachers lace the carcass with a deadly pesticide. Such practices can wipe out hundreds of vultures at a time.
Multiple efforts are underway to stop the rapid decline of this bird now listed as critically endangered by the International Union for Conservation of Nature (IUCN). They include a campaign to stop illegal poisoning and raising awareness of the negative impacts of hunting for medicinal and cultural reasons.
infectious, transmissible disease caused by the bacterium Bacillus anthracis that affects both animals and humans.
framework of a decaying structure.
flesh of a dead animal.
level of conservation between "endangered" and "extinct in the wild."
community and interactions of living and nonliving things in an area.
environment where an organism lives throughout the year or for shorter periods of time.
animals raised for human use.
to counteract and make ineffective.
organism that causes a disease, such as a virus.
natural or manufactured substance used to kill organisms that threaten agriculture or are undesirable. Pesticides can be fungicides (which kill harmful fungi), insecticides (which kill harmful insects), herbicides (which kill harmful plants), or rodenticides (which kill harmful rodents.)
person who hunts or fishes illegally.
substance that harms health.
healthy and strong.
mammal with hooves, usually divided into even-toed ungulates (cattle, camels, deer) and odd-toed ungulates (horses, zebras, rhinoceroses).