Immerse yourself in "vulture culture" and learn why vultures are key to a healthy environment. These "nature's garbagemen" help clean up carcasses of dead animals and prevent the spread of disease. In places where their numbers are decreasing, like in India, this deficit is becoming a big problem for the human population that depends on them. Vultures are an ecologically vital group of birds that face a range of threats in many areas that they occur. Populations of many species are under pressure and some species are facing extinction.