Use, misuse and extensions of “ideal gas” models of animal encounter

JMC Hutchinson, PM Waser - Biological Reviews, 2007‏ - Wiley Online Library
Biologists have repeatedly rediscovered classical models from physics predicting collision
rates in an ideal gas. These models, and their two‐dimensional analogues, have been used …

Neocortex size as a constraint on group size in primates

RIM Dunbar - Journal of human evolution, 1992‏ - Elsevier
Two general kinds of theory (one ecological and one social) have been advanced to explain
the fact that primates have larger brains and greater congnitive abilities than other animals …

A method for testing association patterns of social animals

L Bejder, D Fletcher, S Bräger - Animal behaviour, 1998‏ - Elsevier
Association indices were originally developed to describe species co-occurrences, but have
been used increasingly to measure associations between individuals. However, no …

The von Economo neurons in frontoinsular and anterior cingulate cortex in great apes and humans

JM Allman, NA Tetreault, AY Hakeem… - Brain Structure and …, 2010‏ - Springer
Abstract The von Economo neurons (VENs) are large bipolar neurons located in
frontoinsular (FI) and anterior cingulate cortex in great apes and humans, but not other …

The socioecology of fission-fusion sociality in orangutans

CP Van Schaik - Primates, 1999‏ - Springer
Fission-fusion systems can have the group or the individual as their primary unit. In group-
based fission-fusion systems, predation risk reduction is the major benefit to grou**, in the …

The behavioral ecology and conservation of the orangutan (Pongo pygmaeus): A tale of two islands

RA Delgado Jr, CP Van Schaik - … Anthropology: Issues, News …, 2000‏ - Wiley Online Library
Orangutans are the only great apes found outside of Africa. At present, they occur only on
the two large Sunda‐shelf islands of Sumatra and Borneo. Most researchers recognize two …

Gorilla society: conflict, compromise, and cooperation between the sexes

AH Harcourt, KJ Stewart - Mammalia, 2008‏ - degruyter.com
AH Harcourt, a well-known professor of anthropology at the University of California, has
published papers on gorillas since 1978 and KJ Stewart has worked with him since 1987 …

Intelligent tool use in wild Sumatran orangutans

EA Fox, AF Sitompul, CP Van Schaik - The mentality of gorillas and …, 1999‏ - cambridge.org
Until recently, there was limited evidence of tool use (sensu Beck, 1980) by wild orangutans
(Pongo pygmaeus), and no evidence of tool manufacture, despite several long-term field …

[ספר][B] Orangutans: geographic variation in behavioral ecology and conservation

SA Wich, TM Setia, CP van Schaik - 2010‏ - books.google.com
This book describes one of our closest relatives, the orangutan, and the only extant great
ape in Asia. It is increasingly clear that orangutan populations show extensive variation in …

Factors affecting intra-and inter-specific variations in the difference between alert distances and flight distances for birds in forested habitats

E Fernández-Juricic, MD Jimenez… - Canadian Journal of …, 2002‏ - cdnsciencepub.com
Studies of escape from predators have usually focused on fleeing. We studied intra-and inter-
specific variations in a previous level of decision-making during predator prey encounters by …