March, 1995. Cape Buffalo graze and drink on the Chobe River flood plain. Cape buffalo are often found in herds of 100 or more. They must drink each day and thus never stray too far from water. This photograph shows a large bull, females, juveniles and a small calf. If you look closely, you can see Oxpeckers on the back of some of the buffalo. These birds have very sharp claws for clinging to large mammals. Their bills are used to comb the animal for ticks and blood-sucking flies. Photo by Returned Peace Corps Volunteer Susan Ross.