Species of Dzanga-Sangha
The forest elephants in Dzanga Sangha are present in such densities that they modify the landscape by opening clearings and paths and digging water holes on which other animals, such as forest buffalos, Hartlaub ducks and antelopes, depend. It is extremely difficult to observe elephants in the dense rainforest but between 50-100 at a time can be seen at the Dzanga Bai forest clearing. The elephants go there daily to consume the mineral-rich soil.
Forest buffalo (Syncerus caffer nanus)
The forest buffalo has a reddish brown coat and can reach about 500 kg. They feed on grasses and are dependant on clearings created by elephants. Elephants, in their search for clayey soils, high in mineral content, actively maintain open clearings that are in turn used by forest buffalos.
Bongo (Tragelaphus eurycerus)
The bongo is the largest antelope found in the African rainforest. It is known for the characteristic white lines on its reddish-brown coat. Aside from its coat, equally remarkable are its large ears, constantly moving to keep the flies off. One can regularly see traces of bongo while tracking gorillas and hiking around the clearings.
Agile Mangabey (Cercocebus agilis)*
This species is generally found in periodically flooded swamp forest, although in Dzangha-Sangha animals spend most of their time on dry ground in mixed forests. Agile mangabey's spend most of their time in trees feeding on fruit, seeds and shoots.
The Dzanga Sangha Protected Areas also offer much interest for amateur ornithologists. One can come across the endemic Dzanga robin (Stphronis sanghensis), the Hartlaub duck (very rare), as well as many raptors and water birds. 379 species of bird have been listed inside Dzanga Sangha.
Link to list of birds
Link to a full list of mammals
*Source: IUCN's Red List of Threatened Species http://www.iucnredlist.org/details/136615