Often you will see a large bird soaring in the sky, using thermals to gain height. More than often this bird turns out to be a vulture.
Often called ugly, disgusting, and unhygienic, vultures play a crucial role in the environment as nature's best scavengers. They will find dead animals in the environment and pick the bones clean which in turn helps regulate potential carcass-borne diseases that are exposed to other fauna.
They are fully adapted for a life on the wing searching out food. A huge wingspan allows them to cover great distances whilst soaring. Keen eyesight helps them look out for dead or decaying animals on the ground. A naked, featherless neck keeps them from getting rotten meat stuck on their heads, and a sharp pointed beak is helpful for tearing rotten flesh.
http://mentalfloss.com/article/92427/why-dont-vultures-eat-live-prey