The idea that competition and aggression are central to an understanding of the origins of
group‐living and sociality among human and nonhuman primates is the dominant theory in …

Remembering locations of food resources is critical for animal survival. Gibbons are
territorial primates which regularly travel through small and stable home ranges in search of …

One of the least studied aspects of the Hylobatidae is their social behavior. In the past,
researchers have attributed this to a general lack of affiliative social interactions due to small …

Agile gibbons (Hylobates agilis) and siamangs (Symphalangus syndactylus) are sympatric
small apes inhabiting threatened forests of Sumatra, Indonesia. We censused both species …

While it is now obvious that social relationships must be described in terms of social
interactions and, in turn, social structures in terms of social relationships, the influence of …

We studied the ranging behavior of a habituated group of black crested gibbons (Nomascus
concolor **gdongensis) in a high, seasonal habitat on Mt. Wuliang, central Yunnan, China …

The amygdala and hypothalamus become sexually differentiated by gonadal hormones
giving rise to sexually differentiated behaviors, which include play behavior. Phylogenetic …

It is well established that allogrooming, which evolved for a hygienic function, has acquired
an important derived social function in many primates. In particular, it has been postulated …

Abstract A three‐year (2001–2003) study was carried out on the home range characteristics
of seven wild white‐handed gibbon (Hylobates lar) groups focusing on the spatio‐temporal …

Limestone forests are an unusual habitat for primates, but little information is available for
the genus Macaca in such habitats, making a comparative understanding of extant …