, Volume 14, Issue 3, pp 467-477

Sleeping sites and lodge trees of the night monkey (Aotus azarae) in Bolivia

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Between 1984 and 1987, we recorded the sleeping-site and lodge tree preferences of night monkeys at the Beni Biological Station, Bolivia. We characterized the structure of sleeping-site compared lodge trees to nonlodge trees, and determined the frequency of their use. Aotus azarae used branch and liana platforms on trees of the middle strate of the forest as sleeping sites, but the lodge trees provided sparse cover. Monkeys may manipulate either natural accumulations of material or bird nests to serve as sleeping sites. The characteristics of the sleeping site and of the lodge trees may be related to protection against predators and to thermal advantages. The distribution of lodge trees appeared to be related to access to food. Activities around the sleeping site could be related to marking behavior.