In southwestern Serbia, the dazzling emerald-hued Uvac River sneaks through the steep limestone rock of the Uvac National park- a phenomenon of nature best viewed from above. This stunning setting is the home of a conservation project to save the native griffon vulture, a species that just two decades ago was on the brink of extinction. The giant birds with their near 3m wingspan create an incredible aerial sight as they first gather in the air in a vast swirling group then descend to feed en ma