Condors, which weigh up to 33 pounds and sport an enormous 10-foot wingspan, eat dead animals that could otherwise harbor lethal bacteria like anthrax and botulism.
They have long lifespans, reaching up to 75 years in captivity. But they also reproduce slowly — only one chick every other year. Both parents are needed to raise offspring, which demand support for an entire year, said Michael Mace, the curator of birds at the San Diego Zoo Safari Park.
The biggest threat to the condors comes from farmers and ranchers who shoot or poison them after wrongly assuming the birds kill livestock. In fact, the condors are just opportunists that feast on already dead animals.In Peru’s Blood Festival, It’s The Condor Versus The Bull : Parallels : NPR