According to the IUCN Red List of Threatened Species, the black crested gibbon is now a Critically Endangered species. It’s ...

According to the IUCN Red List of Threatened Species, the black crested gibbon is now a Critically Endangered species. It’s ...

A survey ofthe black crested gibbon population was conducted between 2001 and 2002. The loud call of the apes made it easier for researchers to identify them and their numbers. A second survey was ...