African rail
These birds probe with their bill in mud or shallow water, also picking up food by sight. They mainly eat insects, crabs and other small aquatic animals.
Water buffalo
Water buffalo thrive on many aquatic plants. During floods, they will graze submerged, raising their heads above the water and carrying quantities of edible plants. Water buffalo eat reeds, "Arundo donax", a kind of "Cyperaceae", "Eichhornia crassipes", and "Juncaceae". Some of these plants are of great value to local peoples. Others, such as "E. crassipes", are a major problem in some tropical valleys and water buffalo may help to keep waterways clear.