Association among wild orang-utans: sociality, passive aggregations or chance?

@article{Mitani1991AssociationAW,  title={Association among wild orang-utans: sociality, passive aggregations or chance?},  author={John C. Mitani and Gregory F. Grether and Peter S. Rodman and Dolly Priatna},  journal={Animal Behaviour},  year={1991},  volume={42},  pages={33-46},  url={https://api.semanticscholar.org/CorpusID:40824300}}

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Comparisons with results of studies from other areas indicate that, once samples used in each study are made explicit and aggregations owing to chance encounters at major food sources excluded, orangutan sociality seems relatively consistent over the entire range in which the species is found.

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The orang-utan or ‘man of the woods’ has now become the rarest, most threatened and least understood of all the apes.

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Experiments with and behavioral observations of natural populations suggest that sophisticated cognitive mechanisms may underlie primate social relationships, supporting the view that at least some aspects of primate intelligence evolved to solve the challenges of interacting with conspecifics.

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