Some long-tailed macaques acquired new skills during lockdown Christophe Courteau/naturepl.com
Wild monkeys on a Thai island began using stone tools during the covid-19 pandemic, when travel restrictions meant they were no longer being fed by tourists.
Several other groups of primates use stone tools, but we haven’t been able to study the origins of this behaviour before, says Jonathan Reeves at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, who wasn’t involved in the study. “We…
