Tim Laman / Paradise tree snake (Chrysopelea paradisi) on tree branch preparing to leap into the air to cross between trees, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia.

Tim Laman / Orangutan researcher, Cheryl Knott, climbing rope into giant canopy tree with stranger fig tree roots growing down its side, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia.

Tim Laman / A young boy (model released) aged 9, crossing the suspension bridge over the river at the research station in Gunung Palung NP, Borneo. July

Tim Laman / Mother and two young children (all model released)traveling by boat downstream from the research camp in Gunung Palung NP Borneo. July 2007

Tim Laman / Juvenile female Bornean Orangutan (Pongo pygmaeus) called Betsy (daughter of Beth) hanging from vine, Gunung Palung NP, Borneo.

Tim Laman / Adult female Bornean Orangutan (Pongo pygmaeus) resting on a large vine in the wild, in Gunung Palung NP, Borneo.

Tim Laman / Rhinoceros hornbill (Buceros rhinoceros) perched in tree, Gunung Palung National Park, West Kalimantan, Borneo, Indonesia.

Gerry Ellis / Orangutan (Pongo pygmaeus) male being released after being rescued from 2015 fires, Gunung Palung National Park, West Kalimantan, Borneo, Indonesia

Tim Laman / Adult male Bornean orangutan (Pongo pygmaeus) in rainforest canopy, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Tim Laman / Long-tailed macaque (Macaca fascicularis) mother with baby in the canopy of a fruiting strangler fig tree (Ficus dubia), surrounded by ripening figs. Gunung Palung National Park, Borneo.

Tim Laman / Russell and Jessica Laman playing in the river at the Cabang Panti Research Site, Gunung Palung National Park, Borneo. August 2010

Tim Laman / Ripening figs of the strangler fig (Ficus dubia) Gunung Palung National Park, Borneo.