 Primarily a <unk> , the oribi prefers fresh grasses and <unk> occasionally . Grasses can constitute up to 90 % of the diet ; preferred varieties include <unk> , <unk> , <unk> , <unk> , <unk> and <unk> species . Mineral <unk> are also visited regularly . Oribi have been observed feeding on flowers and Boletus mushrooms . Groups of oribi <unk> in the rainy season , when grasses are abundant . 
