Diana monkeys dwell in the upper canopy of the forest; however, they rarely make nests to sleep in. Diana monkeys emit different grunts and low croaks, but the cry of the Diana has been described as yowling. The Diana monkeys likewise responded to the “krak” calls more intensely. They combine calls to make sentence-like messages. All groups responded by increasing their contact, general alert, and eagle alarm call rates. Remarkably, male Diana monkey alarm call sequences travel over long distances in dense forest habitat (more than 800 m; K.Z. The two call variants were played to different diana monkey groups; conspecifics responded to them as though the original predator were present. Chimpanzees and human poachers, the two other very frequent predators for the Taï monkeys,bothsearchforpreybyacousticcues (Boesch&Boesch1989;Martin1989).Oncethey Diana monkey inhabits primary, mature tropical rainforests. Female Diana monkeys produce predator-specific alarm calls, alert calls and contact calls in response to predators, suggesting that their calls serve in a broader range of functions compared to males. Diana monkey, (Cercopithecus diana), arboreal species of guenon named for its crescent-shaped white browband that resembles the bow of the goddess Diana.The diana monkey is generally found well above the ground in West African rainforests.Its face and much of its fur are black. THE FUNCTIONAL SIGNIFICANCE OF DIANA MONKEY ‘CLEAR’ CALLS by DANA USTER 1,2) and KLAUS ZUBERBÜHLER 2,3,4,5) ( 1 Zoologisches Institut, Universität Braunschweig; 2 Centre Suisse de Recherches Scienti ques, Taï Monkey Project, Abidjan; 3 Max-Planck-Institutefor Evolutionary Anthropology, Leipzig) (Acc. It has a white beard, chest, and throat; there are a white stripe along each thigh and a deep reddish patch on the back. Their calls are similar to human words, at least from the listener's perspective. Diana monkeys have marked colouration which allows a wide range of visual social signals and they also have a wide range of alarm calls, with different sounds for different predators.

Diana monkeys make different vocalizations for different predators. Geographic Distribution and Habitat The Diana monkey, or Ceropithecus diana, is an Old World monkey that is found in West Africa, from Sierra Leon to Ghana.They are primarily arboreal, meaning they spend most of their time in trees, and t hey live in primary tropical and terrestrial forests. Diana monkey is a primate that belongs to the group of Old World monkeys. In other primate species, close-range calls are typically given in socially relevant situations, for example, to gain access to grooming partners or food. Number of Diana monkeys in the wild is decreasing due to high demand for their meat on the local market, accelerated habitat destruction and civil wars in Liberia and Sierra Leone. Diana monkey long-distance calls facilitate the joining of groups of other species.

Five different Diana monkey groups, which were located in the vicinity of a putty-nosed monkey group throughout the forest, responded to playback of putty-nosed eagle alarm calls as if a crowned eagle were present . THE FUNCTIONAL SIGNIFICANCE OF DIANA MONKEY ‘CLEAR’ CALLS by DANA USTER 1,2) and KLAUS ZUBERBÜHLER 2,3,4,5) ( 1 Zoologisches Institut, Universität Braunschweig; 2 Centre Suisse de Recherches Scienti ques, Taï Monkey Project, Abidjan; 3 Max-Planck-Institutefor Evolutionary Anthropology, Leipzig) (Acc. 17-IV-2001) Summary In their natural West African rainforest habitat, Diana … We conclude that, in addition to their function in perception advertisement, diana monkey long-distance calls function as within-group semantic signals that denote different types of predators. Diana monkeys produce acoustically distinct calls to a number of external events, including different types of predators. Their calls differ based on signaller sex, threat type, habitat, and caller ontogenetic or lifetime predator experience.. Diana monkeys emit different alarm calls … Number of Diana monkeys in the wild is decreasing due to high demand for their meat on the local market, accelerated habitat destruction and civil wars in Liberia and Sierra Leone. Diana monkeys also produce alarm signals. They combine calls to …

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