Transfer of two western lowland gorillas
International studbooks provide the information necessary for conservation breeding programmes to make informed decisions regarding the transfer of animals between institutions.
Two western lowland gorillas were transferred from Zurich Zoo in Switzerland to the National Zoological Gardens of South Africa in Pretoria. The two males will join another two males to form a bachelor group there. The decision to transfer the two gorillas is based on advice provided by the European Endangered Species Programme. The information necessary to make such recommendations for conservation breeding is contained in international studbooks, wherein all data relevant to the captive population of a certain species are collected and continuously updated. Currently, 118 active international studbooks for 159 species and/or sub-species are kept under the auspices of WAZA.