World Nature Photography Awards (WNPA) 2023 Mature male orangutans have large flappy cheek-pads, known as flanges, a throat sac used to make loud verbalisations called long calls. © Thomas Vijayan 4+ weeks remaining
World Nature Photography Awards (WNPA) 2022 Photo by Amos Nachoum, the Gold Winner and Grand Prize of World Nature Photographer of the Year 2021 competition Expired