The exhibit features enclosures housing common squirrel monkeys and tufted capuchins. However, aggressive interactions between the capuchins and spider monkeys also occur. Some primatologists continue to consider the Panamanian and Colombian white-faced capuchins as a single species. Also, no gracile capuchins have beards. Some gracile capuchins are known to use tools. This genus is also referred to as "gracile" capuchins. Curiously, not all tufted capuchins engage in tool use. By 1566, he joined a lay order of Capuchins, an offshoot of Franciscans. Robust capuchins have crests and the males have beards. Most Latin-rite clergy are now clean-shaven, but Capuchins and some others are bearded. Large convents were opened, including Ursulines, Benedictines and Capuchins. From Northern Italy it was carried to elsewhere in Europe by the Capuchins and Jesuits. Saint Theodore was the patron saint of the Capuchins. The 18th century brought more Jesuits and Capuchins from Europe. Several species of bird are also known to follow Panmanian white-faced capuchins looking for food.