Elephants at the Selous Game Reserve in Tanzania are being fitted with GPS collars in response to a 90% reduction in populations of elephants in the reserve.

GPS collars have been used to track elephants in the park before, but this latest initiative in conjunction with the World Wildlife Foundation is the largest collaring effort to date, with up 60 elephants to be tagged in the next 12 months.

It’s hoped that the collars will enable park rangers to respond to threats to the elephants in real-time, vital in such a large area.

Africa is estimated to only have 15,200 elephants left, down from 110,000 40 years ago.