Yutsa Gunbu Harvesters (IMAGE) Washington University in St. Louis Caption Young people are especially adept at harvesting yartsa gunbu because of their keen eyesight. Credit WUSTL / Geoff Childs Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.