作者: Sofia IF Forss , Caroline Schuppli , Dominique Haiden , Nicole Zweifel , Carel P Van Schaik
DOI: 10.1002/AJP.22445
关键词:
摘要: … of the same species to document this “captivity effect” in … captive individuals with a risk-free environment, abundant … from the captive part of this study, because these zoo orangutans are …