 The park has more than 400 bird species, including the lyre-tailed honey guide.216 of these species (66 percent of the country's total bird species) are true forest birds, including the rare Oberländer's ground thrush ("Geokichla oberlaenderi"), Sassi's olive greenbul ("Phyllastrephus lorenzi") and nine hornbill species.The park provides habitat for over 60 mammal species, including African buffalo, leopard, hippopotamus, mona monkey, water chevrotain, bush babies, African civet, African elephant, and the Pygmy scaly-tailed flying squirrel ("Idiurus zenkeri").