Evidence for a spatial memory of fruiting states of rainforest trees in wild mangabeys

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Chimpanzees use long-term spatial memory to monitor large fruit trees and remember feeding experiences across seasons (2013, background): “…Menzel 1973; honeybees, Apis mellifera: Dyer 1996; capuchin monkeys, Cebus apella nigritus: Janson 1998; three-spined sticklebacks, Gasterosteus aculeatus: Girvan & Braithwaite 1998; nutcrackers, Nucifraga columbiana: Balda & Kamil 1998; sooty mangabeys, Cercocebus atys atys: Janmaat et al. 2006).”
Sophisticated Euclidean maps in forest chimpanzees (2009, background): “With such capacities, primates know ‘where’ the resources are (Garber 1989; Garber & Paciulli 1997; Janson 2007), ‘when’ to look for them (Janmaat et al. 2006a, b) and ‘what or how much’ there is likely to be (Cunningham & Janson 2007a, b), and this is true when the resources are tools rather than…”
Food-associated calling sequences in bonobos. (2009, background): “In their natural African forests, primates are confronted with complex and continuously changing food availability (Janmaat et al. 2006a, b).”