An environmental mystery is solved, but answer points to larger concerns
Vultures in India and Pakistan play a vital environmental role by quickly removing dead livestock, inactivating pathogens, and probably controlling the spread of livestock disease. Vultures are also essential to the “sky burials” practiced by Zoroastrian sects. So the sudden and precipitous decline in vulture population caused great consternation throughout the subcontinent.
Over the past decade, the population of the Oriental white-backed vulture has declined by more than 95 percent. Other vulture species have experienced similar catastrophic declines. When Washington State University veterinary diagnostician Lindsay Oaks arrived in Pakistan in 2000 to investigate the mysterious deaths, he selected for study three colonies of perhaps 1,000 … » More …