The chimpanzee nest quantified: morphology and ecology of arboreal sleeping platforms within the dry habitat site of Toro-Semliki Wildlife Reserve, Uganda.

Primates; Journal of Primatology
David R Samson

Abstract

The nightly construction of a sleeping platform (SP) or "nest" is widely regarded as a universal behavior among great apes, yet SP structural morphology has been incompletely quantified to date. This is in part due to the inherent difficulties of gathering empirical data on arboreally sited SPs. I gathered quantitative structural data on SPs (n = 65) at the Toro-Semliki Wildlife Reserve from May to June 2008 and from August 2010 to January 2011. I measured SP length (semi-major axis length), width (semi-minor axis length), radii (length from the surface center to the rim edge 45° from the axis), depth (width of the concavity from the surface center to the parallel rim), and thickness (ventral center to the dorsal underside of the SP). SP complexity was defined with a scored index. SP complexity was found to be correlated with SP circumference, surface area, mass, proportion of soft leafy material to hard woody material, number of frame support branches used in its construction, and other measures that are argued to index "comfort." In addition, the height of the tree canopy above the SP was negatively correlated with SP complexity. Greater complexity (and therefore stability) is argued to maintain SP integrity, stability and re...Continue Reading

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Citations

Oct 9, 2013·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·W C McGrew
Dec 15, 2015·Evolutionary Anthropology·David R Samson, Charles L Nunn
May 9, 2013·American Journal of Primatology·R Adriana Hernandez-AguilarCraig B Stanford
May 9, 2014·American Journal of Primatology·Katie L Feilen, Andrew J Marshall
Mar 11, 2015·American Journal of Physical Anthropology·David R Samson, Robert W Shumaker
Jul 30, 2016·Evolution, Medicine, and Public Health·Charles L NunnAndrew D Krystal
Jul 11, 2018·American Journal of Physical Anthropology·Barbara FruthFiona Stewart
Jul 11, 2018·American Journal of Physical Anthropology·David R SamsonCharles L Nunn
Jul 11, 2018·American Journal of Physical Anthropology·Fiona A StewartJill D Pruetz
Jul 11, 2019·Scientific Reports·Kathleen D ReinhardtK Anne-Isola Nekaris
Jun 13, 2018·Royal Society Open Science·Megan S ThoemmesRobert R Dunn
Apr 10, 2021·Primates; Journal of Primatology·William C McGrew
Nov 2, 2021·PloS One·Alexander Q ViningDavid R Samson

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