Three more rangers killed in a deadly month around the world for wildlife defenders

Wildlife protection has become an increasingly dangerous business as rangers face armed gunmen and poachers

Three rangers have been killed in separate countries in a deadly month for wildlife defenders.

A ranger at Serra da Capivara national park, in Brazil's north-eastern Piaui region, was killed by hunters on 18 August. Edilson Aparecido da Costa Silva and two other colleagues were patrolling the park when they were ambushed by a group of four armed men who are believed to have been hunting in the park illegally. Costa Silva was killed in the shootout that followed, while the other two rangers were injured.