Archives for research report


Research Report: Dynamics of population growth by Cebus capucinus in Costa Rica

Research Report
The population of white-faced capuchin monkeys (Cebus capucinus) in the Sector Santa Rosa (SSR) of the Area de Conservación Guanacaste in northwestern Costa Rica offers a unique opportunity to model how landscape variability affected selection on early hominins.  This species shows many anatomical and behavioral convergences with great apes and humans, and they thrive in a broad range of environmentalmore »

Exploring ‘Ein Qashish, a Middle Paleolithic site in northern Israel

Research Report
Erella Hovers Institute of Archaeology, Hebrew University of Jerusalem Excavation of ‘Ein Qashish Traditionally, studies of Levantine (eastern Mediterranean) Middle Paleolithic sites have focused on caves, and so exploration of the open-air ‘Ein Qashish site presents a novel opportunity to expand our understanding of the behavioral dynamics of Middle Paleolithic hominins (modern humans as wellmore »

Stress in wild female Assamese macaques

Research Report
Julia Ostner University of Göttingen Researchers have been performing daily focal observations and fecal sampling on this study group of habituated Assamese macaques in Thailand’s Phu Khieo Wildlife Sanctuary since October 2006.  For her investigation of ecological, social and reproductive stress in female macaques, Julia Ostner used data collected between September 2007 and February 2009. This… more »

Research Report: The function(s) of a long-distance signal: the orangutan long call

Research Report
Brigitte Spillmann, PhD Candidate Anthropological Institute and Museum, University of Zurich Photo:  Mure Wipfli Brigitte Spillmann was awarded a Leakey Foundation research grant in spring 2010 for her PhD project focusing on the functions of the long call, the long distance signal of the flanged male orangutan. Long distance signaling in widely dispersed, semi-solitary species is often used to more »