Chimpanzees use least-cost routes to out-of-sight goals

Samantha Green, Bryan Boruff, Tyler Bonnell & Cyril Grueter
While the ability of naturally ranging animals to recall the location of food resources and use straight-line routes between them has been demonstrated in several studies [1, 2], it is not known whether animals can use knowledge of their landscape to walk least-cost routes [3]. This ability is likely to be particularly important for animals living in highly variable energy landscapes, where movement costs are exacerbated [4, 5]. Here, we used least-cost modelling, which determines...
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