JAKARTA, Nov. 27 (Xinhua) -- Indonesia has released seven Javan langurs into a forest on Mount Biru in Batu City, East Java, a conservation agency said on Friday.
The Aspinall Foundation Indonesia said the langurs consist of a male and six females.
Before being released, the langurs aged between 2 and 7 years old have undergone a 1.5-year rehabilitation process.
The health test results concluded that they were free from infectious diseases such as tuberculosis (TB), hepatitis B, herpes, and others.
A transponder microchip has been attached to each of the langurs to monitor their condition.
Meanwhile, the release location in Mount Biru is a mountainous tropical rain forest area that has a variety of vegetation.
Javan langurs occur in Indonesian forests on the western and southern coasts, such as those in the islands of Java, Bali and Lombok, where their population has decreased by more than 30 percent over the past 36 years.
Javan langurs are listed as vulnerable species on the International Union for Conservation of Nature (IUCN) Red List.
Since 2012 the East Java Natural Resources Conservation Agency and the Aspinall Foundation Indonesia have released 102 Javan langurs. Enditem
