The recovery of ancient mummified parrots in South America, dating to between 1100 and 1450 AD, suggest trade routes crossed the Atacama Desert, according to a study published Monday in PNAS. "Feathers are valued across the Americas and we see them in high-status burials ," José M. Capriles , said in a press release. "We don't know how the feathers got there, the routes they took or the network," Capriles ...