Of all 504 primate species, the rarest and most vulnerable is found only on one tropical island at the southern tip of China. The majestic and enigmatic Hainan gibbon is confined to a single small patch of forest. Only around 25 remain.
The global map of alien bird species has been produced for the first time by a UCL-led team of researchers. It shows that human activities are the main determinants of how many alien bird species live in an area but that alien species are most successful in areas already rich with native bird species.