A species of primates, the Hainan black-crested gibbon, has one more family member. There are only 30 of this species in the world, so every single one matters.

The Hainan black-crested gibbon is endemic to Hainan Island in southern China. It is evaluated as "critically endangered" by IUCN red list. But historically, it was widely distributed in the country; in the 1950s, there used to be over 2,000 gibbons in Hainan. Their population drastically dwindled in the past half-century, due to habitat loss and poaching. 

Fortunately, after the establishment of nature reserves, the rare species has started to see new hope. In 1980, there were merely seven Hainan black-crested gibbons; last year, the population had reached twenty nine. The last data show there are thirty of them living in Hainan Bawangling National Nature Reserve now. 

Even better news is, there is a new couple. After tracking them for several days, researchers have found that a male and a female have begun a singing duet, meaning they have "partnered" and are forming a new family. This will be the fifth family group of the species. 

To learn more about this amazing animal: 

Monkey Mania: Hainan black-crested gibbon

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