Nenuah, a 9-year-old Bornean Orangutan, receives an antidote to anesthesia from a veterinarian and technician, during a final health check before being transported and released to the Bukit Batikap protection forest, at the Nyaru Menteng Orangutan Rehabilitation Center in Palangka Raya, Central Kalimantan province, Indonesia, February 15, 2021 in this photo obtained by Reuters on February 22, 2021. Indonesian rehabilitation centre on Borneo island said it released 10 critically endangered orangutans into the wild last week with help from a helicopter. Borneo Orangutan Survival Foundation (BOSF)/Handout via REUTERS

Nenuah, a 9-year-old Bornean Orangutan, lies during a final health check before being transported and released to the Bukit Batikap protection forest, at the Nyaru Menteng Orangutan Rehabilitation Center in Palangka Raya, Central Kalimantan province, Indonesia, February 15, 2021 in this photo obtained by Reuters on February 22, 2021. The Bornean orangutans had all previously been in captivity before their rescue, including Nenuah, a 19-year-old female who was repatriated from Thailand. Courtesy of Borneo Orangutan Survival Foundation (BOSF)/Handout via REUTERS

A veterinarian in personal protective equipment (PPE) performs the final health check on Juve, a 25-year-old Orangutan, which will be transported and released to the Juq Kehje Sewen island, at the Samboja Lestari Orangutan Rehabilitation Center in Kutai Kartanegara, East Kalimantan province, Indonesia, February 17, 2021 in this photo obtained by Reuters on February 22, 2021. There are estimated to be around 100,000 Bornean orangutans left in the wild, according to the World Wildlife Fund, while there are only estimated to be about 7,500 Sumatran orangutans. Courtesy of Borneo Orangutan Survival Foundation (BOSF)/Handout via REUTERS

Technicians in personal protective equipment (PPE) carry Juve, a 25-year-old Orangutan, for a final health check before being transported and released to the Juq Kehje Sewen island, at the Samboja Lestari Orangutan Rehabilitation Center in Kutai Kartanegara, East Kalimantan province, Indonesia, February 17, 2021 in this photo obtained by Reuters on February 22, 2021. Courtesy of Borneo Orangutan Survival Foundation (BOSF)/Handout via REUTERS

Cages with orangutans are transported on trucks to the release site, at the Juq Kehje Sewen island in East Kutai regency, East Kalimantan province, Indonesia, February 18, 2021 in this photo obtained by Reuters on February 22, 2021. Courtesy of Borneo Orangutan Survival Foundation (BOSF)/Handout via REUTERS

Technicians carry the cage of Noel, a 15-year-old Orangutan, upon the arrival at the release site at Bukit Batikap Protection Forest in Murung Raya regency, Central Kalimantan province, Indonesia, February 16, 2021 in this photo obtained by Reuters on February 22, 2021. Courtesy of Borneo Orangutan Survival Foundation (BOSF)/Handout via REUTERS