Multi-generational vulture nests hold 700 years of human artifacts

Popular Science 

Breakthroughs, discoveries, and DIY tips sent every weekday. Most bird nests are temporary homes, but not for the bearded vulture (). The threatened species assemble their abodes in the rocky shelters and cliff caves of various mountain ranges around the world, offering shelter for generations. If especially well protected from the elements, a bearded vulture nest can host the animals for multiple centuries. Objects made by humans, including paper litter and plastic bags often find their way into the nesting components.