Chimps of the Mitumba Community Produce a Range of Calls (video) Acoustical Society of America Share Print E-Mail Loading video... Caption Chimps of the Mitumba community produce a range of calls while Edgar, the alpha male, charges and drums on the tree. Credit Nisarg Desai Usage Restrictions This video may be used only with appropriate credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.