... with increasing numbers of males and sexually receptive females. Alpha male chimpanzees ( Pan troglodytes ) often sire a disproportionate, though somewhat variable, percentage of offspring compared to other males. In a small community of eastern chimpanzees inhabiting a human-dominated landscape in Bulindi...

... and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Fossil ape Chimpanzee Palaeoanthropology Terrestrial behaviour Woodland Environment Palaeoecology Miocene...

...Sarah Dunphy-Lelii; John C. Mitani Data from a large cross-sectional sample of wild chimpanzee mother-infant dyads yield evidence that young chimpanzees’ pant grunting unfolds nonlinearly over the early developmental period. Though infants begin pant grunting early, and mothers’ rates did...

...Paul Dutton; Elena Moltchanova; Hazel Chapman Understanding nest site choice by chimpanzees has implications for ecology, anthropology, and in the collection of census data, yet it remains controversial. Here we provide the first information on environmental factors affecting nest site choice...

...Cadell Last; Bernice Muh In several areas of Africa, great apes experience increasing predation pressure as a result of human activities. In this study, terrestrial and arboreal nest construction among chimpanzee (Pan troglodytes ellioti) populations was investigated in the Lebialem-Mone Forest...

...Bethan J. Morgan; John Ngu Suh; Ekwoge E. Abwe We describe the first observation of a predation attempt by Nigerian-Cameroon chimpanzees (Pan troglodytes ellioti) on Preuss’s red colobus (Procolobus preussi) in the Ebo forest, Cameroon. The activity, which was observed for 15 min, primarily...

... a prolonged period of dependence [Shultz and Dunbar, 2006]. It has been suggested that parties of chimpanzees minimize predation risk by moving more swiftly, cohesively, quietly and in large numbers when crossing open habitats [reviewed in Tsukahara, 1993]. Rapid, unified movements were also observed...

...Hogan M. Sherrow Dominance relationships are common among primates, and are usually the result of resource competition. Adult male chimpanzees have pronounced dominance relationships, and can be ranked relative to one another in dominance hierarchies. Adult male chimpanzees achieve, and maintain...

...Alejandra Pascual-Garrido; Umaru Buba; George Nodza; Volker Sommer We investigated the acquisition of plant materials from which Nigerian chimpanzees manufacture wooden tools to harvest insects and honey from nests of army ants, honey bees and stingless bees. Slender trunks of juvenile trees...

...S.R. Ross; M.S. Milstein; S.E. Calcutt; E.V. Lonsdorf Chimpanzees acquire nut-cracking skills by observation and trial and error. Studies of captive chimpanzees have shown the effectiveness of a skilled demonstrator. We examined the effectiveness of 3 live demonstration forms from which subjects...

... Shape Thin-plate spline Chimpanzee Man Procrustes Allometry © 1996 S. Karger AG, Basel 1996 Copyright / Drug Dosage / Disclaimer Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means...

...Toshisada Nishida; Miho Nakamura Chimpanzee Mahale Mountains Tool use Influenza Cognitive ability 7 06 1993 4 03 1994 16 9 2008 1993 Copyright / Drug Dosage / Disclaimer Copyright: All rights reserved. No part of this publication may be translated into other...

... Prefectural College of Arts and Culture, Oita, Japan Superiority of Conspecific Faces and Reduced Inversion Effect in Face Perception by a Chimpanzee Keywords Chimpanzee Pan troglodytes Humans Homo sapiens Face perception Face recognition Inversion effect Visual communication Introduction Faces represent...

...M.N. Muller; E. Mpongo; C.B. Stanford; C. Boehm Brief Report Folia Primalol 1995:65:43-47 © 1996 S. Karger AG. Basel 0015-5713/95/0651-0043 $10.00/0 A Note on Scavenging by Wild Chimpanzees M.N. Muller", E. Mpongoh, C.B. Stanford , C. Boehm ' Department of Anthropology, University of Southern...

...L.A. Winkler This study assesses dental development in a sample of 8 known-age infant orangutans and chimpanzees in order to examine discrepancies between radiographic analyses of tooth development and the actual developing teeth. All crania were radiographed and any developing teeth then extracted...

... to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Self-suckling Chimpanzee Mahale Mountains Infant death Breast pain Brief Report Folia Primatol 1997:68:342-343 Received: July 12. 1996 Accepted after revision: August...

...Frances J. White; Colin A. Chapman In an effort to understand factors underlying differences in the social organization of Pan troglodytes and P. paniscus, we measured the nearest neighbor distances and choices for chimpanzees in Kibale National Park, Uganda, and for bonobos in Lomako Forest, Zaire...

...Tasuku Kimura Bipedal walking was studied in chimpanzees between 1 and 19 years of age by measuring the external energy generated by the movement of the centre of gravity of the body. The ‘recovery’ of external energy in infant chimpanzees less than five years of age is smaller than in juveniles...

...Olle E.A. Gustavsson; Bengt O. Röken; Rita Serrander Bordetella pertussis Chimpanzee Epizootic RS virosis Whooping cough 1990 Copyright / Drug Dosage / Disclaimer Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced...

...Tetsuro Matsuzawa A 6.5-year-old female chimpanzee learned to distinguish perfectly every letter of the alphabet in a matching-to-sample task with 26 letters as choice alternatives. Confusion of letters during the initial training was used to scale them in a multidimensional similarity space...