Innovative coconut-opening in a semi free-ranging rhesus monkey (Macaca mulatta): a case report on behavioral propensities
The present case report provides a description of the emergence of an innovative, highly beneficial foraging behavior in a single rhesus monkey (Macaca mulatta) on the island of Cayo Santiago, Puerto Rico. Selectively choosing the island’s cement dock and nearby surrounding rocky terrain, our focal subject (ID: 84 J) opens coconuts using two types of underhand tosses: (1) a rolling motion to move it, and (2) a throwing motion up in the air to crack the shell. We discuss this innovative behavior in light of species-specific behavioral propensities.
KeywordsInnovation Behavioral repertoire Foraging Rhesus macaques
- Kawamura S (1954) A new type of action expressed in feeding behavior of Japanese monkeys in the wild. Seibutsu Shinka 2:11–13Google Scholar
- Rawlins R, Kessler M (1987) The Cayo Santiago macaques. State University of New York Press, New YorkGoogle Scholar
- Visalberghi E, Fragaszy DM (1990) Do monkeys ape? In: Parker ST, Gibson KR (eds) “Language” and intelligence in monkeys and apes: comparative developmental perspectives. Cambridge University Press, New York, pp 247–273Google Scholar