Olivier Nsengimana

Olivier Nsengimana, 2014 Rolex Young Laureate. 2014.

Olivier Nsengimana, 2014 Rolex Young Laureate. Rwanda, 2014.

A hotel in Kigali has four grey crowned-cranes. Olivier Nsengimana, Rolex Young Laureate 2014, has permission to tag these birds. Each tag has a number linked to a GPS code.

A hotel in Kigali has four grey crowned-cranes. Olivier Nsengimana, Rolex Young Laureate 2014, has permission to tag these birds. Each tag has a number linked to a GPS code.

Olivier Nsengimana and colleagues examine grey crowned-cranes in a hotel in Kigali where they are kept as pets. Rwanda, 2014.

A hotel in Kigali has four grey crowned-cranes. Olivier Nsengimana, Rolex Young Laureate 2014, has permission to tag these birds. Each tag has a number linked to a GPS code.

Olivier Nsengimana and colleagues put an identification band on the leg of a grey crowned-crane in a hotel in Kigali. Rwanda, 2014.

This grey crowned-crane is owned by a hotel in Kigali. The identification ring on its leg is linked to a GPS code. Rwanda, 2014.

Olivier Nsengimana, Rolex Young Laureate 2014, meets students from College George Fox of Butaro at Rugezi Marsh where Rwanda's largest number of wild grey crowned-cranes are found. He is with Ayubusa Jean Berekmans (left), President of the Rugezi Marshlands Conservation Cooperative.

Olivier Nsengimana looks for grey
crowned-cranes in the Rugezi marshlands with a class of students. Rwanda, 2014.

Looking for grey crowned-cranes in Rugezi Marsh in Burera District in the north of Rwanda, are (from left): Ferus Jean Niyomwungeri, a conservationist, Ayubusa Jean Berekmans, President of the Rugezi Marshlands Conservation Cooperative and Olivier Nsengimana.

Rugezi Marsh in the Burera District of northern Rwanda is where the largest population of wild grey crowned-cranes can be found.

Wild grey crowned-cranes forage at Rugezi Marsh (Burera District in northern Rwanda), where the largest population of the birds is found. Agriculture is increasingly encroaching on their habitat.

Wild grey crowned-cranes in Kinyarwandalying, in the Rugezi marshlands. Rwanda, 2014.

Olivier Nsengimana (left), who was formerly a vet for Gorilla Doctors, with a ranger in the Volcanoes National Park in north-western Rwanda. This group of gorillas is called Titus.

Akagera National Park is located in north-eastern Rwanda along the border with Tanzania. A rehabilitation centre for the cranes is being built in the park by the Akagera Management Company.