the northern part of the Park in 2000. Four major surveys were carried out, covering all four quarters of the Park. The fauna is very diverse. As in many Central African sites, large mammal abundance increases with increased distance from the road and the villages. True savannah species such as baboon Papio anubis and warthog Phacochoerus africanus occur literally within metres of species of true forest animals, including crowned guenon Cercopithecus pogonias and red river hog Potamochoerus porcus, which here are found right up to the edges of the savannah. All three species of pig occur in the Park (red river hog, warthog, and giant forest hog Hylochoerus meinertzhageni), and there are hippo Hippopotamus amphibius at several sites along the Djerem river. In addition, there are species of forest-savannah mosaic habitats such as bushbuck Tragelaphus scriptus and yellow-backed duiker Cephalophus sylvicultor. Within a few hundred metres it is possible to see signs of Kob Kobus kob, waterbuck Kobus ellipsiprymnus, and forest buffalo Syncerus caffer nanus, and to hear putty-nosed monkeys Cercopithecus nictitans -a strange mixture of forest and savannah wildlife all at one site. Ungulate diversity is high: apart from those mentioned above there are bongo and sitatunga (Tragelaphus euryceros and T. scriptus), several species of duiker (confirmed are blue, red-flanked, Grimm's, black-fronted). The presence of at least ten species of primate, including chimpanzees Pan troglodytes has been confirmed by the study teams either by direct observation of animals or their signs or by hearing their vocalisations, and local hunters suggested there could be still more. One of the most vulnerable animals in the Park is elephant. They occur in the south-centre of the Park but seem to be completely absent in the north (both east and west sides of the Park). Gorillas occur outside the Park, to the southeast, in the Lom-Pangar area (Fotso et al. 2002) but are not found in the Park. The area where they occur is now Deng Deng National Park. The first bird list for Mbam Djerem, a synthesis of the Fotso and Bobo/ Languy surveys, numbered 360 species, and, as for the mammal fauna, included both true savannah species such as brown-rumped bunting Emberiza affinis, black-bellied firefinch Lagonosticta rara, lesser blue-eared starling Lamprotornis chloropterus, white-collared starling Grafisia torquata, brubru Nilaus afer and yellow penduline tit Anthoscopus parvulus and true forest species such as some of the hornbills: black and white casqued hornbill Ceratogymna